From: owner-ibis-users@ (ibis-users) To: ibis-users-digest@eda.org Subject: ibis-users V1 #34 Reply-To: Sender: owner-ibis-users@ Errors-To: owner-ibis-users@ Precedence: bulk ibis-users Thursday, January 15 2004 Volume 01 : Number 034 ---------------------------------------------------------------------- Date: Fri, 5 Dec 2003 04:36:17 -0500 From: "Ambrish Varma" Subject: [IBIS-Users] s2ibis3 Hello, The latest version of s2ibis3 (beta 0.2) has been uploaded at http://www.ece.ncsu.edu/erl/ibis/s2ibis3/s2ibis3.htm S2ibis3 now supports keywords like [series MOSFET] and [series pin mapping] etc. It would be great if the community would continue the great work of testing the tool and letting us know what works and what does not. We would like to test the tool further and move it to version 1.0 ASAP. Thanks and Regards, Ambrish K Varma akvarma@ncsu.edu North Carolina State University ph(919)513-2015, fax(919)515-2285 |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 5 Dec 2003 15:32:28 -0500 From: "Ambrish Varma" Subject: [IBIS-Users] s2ibis3 new version uploaded. Resending this as the last one I sent has not come through yet: - --------------------------------------------------------------- Hello, The latest version of s2ibis3 (beta 0.2) has been uploaded at http://www.ece.ncsu.edu/erl/ibis/s2ibis3/s2ibis3.htm S2ibis3 now supports keywords like [series MOSFET] and [series pin mapping] etc. It would be great if the community would continue the great work of testing the tool and letting us know what works and what does not. We would like to test the tool further and move it to version 1.0 ASAP. Thanks and Regards, Ambrish K Varma akvarma@ncsu.edu North Carolina State University ph(919)513-2015, fax(919)515-2285 |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 5 Dec 2003 19:21:21 -0500 From: "Lynne Green" Subject: [IBIS-Users] Urgent: IBIS Summit at DesignCon Those wishing to attend lunch at the 2004 DesignCon IBIS Summit must register for DesignCon at the link below. This is a separate registration from the IBIS Summit itself. http://www.designcon.com/registration/index.html If you register for the Exhibits before December 19th, registration (including the lunch) is free. After Dec. 19th, the cost will be $75. So if you are unsure whether you will attend, we recommend registering before Dec 19th. The IBIS Summit attendees who have registered with DesignCon will attend lunch and the TechForum keynote speech on Monday. The speaker is Jan Rabaey of UC, Berkeley. http://www.designcon.com/conference/keynote_2-2-2004.html - ----------------------------------------------------------------------- IBIS SUMMIT FIRST CALL FOR PARTICIPATION & PRESENTATIONS - ----------------------------------------------------------------------- I B I S S U M M I T M E E T I N G Time/Date: Monday February 2, 2004 8:00 AM to 5 PM Location: Santa Clara Convention Center Santa Clara, CA Content: Presentations and Discussions Purpose: Solicit and Exchange IBIS Model Related Information and Ideas. Sponsors: DesignCon If your company would be interested in sponsoring this event, please contact Lynne Green . Benefits to sponsors include formal recognition at the meeting and acknowledgement in the Calls for Papers and meeting minutes. Your financial support strengthens the organization by allowing IBIS to focus resources on industry activities rather than raising money, and you will receive generous thanks for your support. DesignCon Conference February 2-5, 2004 Santa Clara Convention Center Santa Clara, CA Exhibit registration is Free if you register before December 19, 2003. Come and visit IBIS Booth 814. See for more information. BACKGROUND DesignCon is the premier annual Silicon Valley event for the electronic design automation (EDA) and semiconductor industry. Topics of current interest to the EIA IBIS Open Forum are addressed at DesignCon. This meeting will be conducted as a formal IBIS Summit Meeting. Presentations are expected to be available and archived in an electronic format, and minutes of the meeting will be issued. Any pending formal decisions (votes) will be announced at least two weeks prior to the meeting. CALL FOR PARTICIPANTS People involved in IBIS Model development, EDA tool development, and digital circuit design are invited to participate in the Summit meeting. If you plan to participate, please register with the information below: Name: E-mail address: Company: Telephone: Send to: Lynne Green CALL FOR PRESENTATIONS We are seeking presentations from individuals who have experiences of interest to the IBIS modeling community. In the past, these have included demonstrations of modeling techniques, explanations of behavioral algorithms and descriptions of difficulties encountered in specific applications. Of particular interest are topics related to model correlation, modeling building experiences and comparisons to other modeling methods. Presentations may be addressed to any and all levels of IBIS experience, from beginning to advanced. Format of Presentation: LCD Projection with Windows laptop. Time: 15-30 Minutes Electronic Archival: We request electronic versions so that the presentations can be archived and also made available to non-attendees. Formats used in the past have been text, Power Point, Word, Postscript, and Acrobat. Electronic presentations should be made available by January 26, 2004 for uploading and copying to the presentation laptop. If you plan a presentation, please supply Title: Presenter: E-mail address: Company: Telephone: Estimated Time: Send this to: Lynne Green AGENDA The agenda includes presentations, discussions, breaks, and a luncheon (which will be provided). This will be developed as presentation proposals are received. LIST OF NEARBY HOTELS See for travel directions, hotels and other information. - ----------------------------------------------------------------- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Mon, 8 Dec 2003 10:45:37 -0800 From: "Muranyi, Arpad" Subject: RE: [IBIS-Users] BIRD85.2 - Slew Time Estimate Clarifications John, In light of our discussion in the IBIS Open Forum meeting last Friday, this is the way I would word that sentence (see ****| lines): ***| In models without the [External Model] keyword, data for [Ramp] ***| should be measured using a load that conforms to the ***| recommendations in Section 9: Notes on Data Derivation Method. ***| However, when used within the scope of [External Model], the ***| [Ramp] keyword is intended strictly to provide EDA tools with a ***| quick first-order estimate of driver switching characteristics. ***| When using [External Model], therefore, data for [Ramp] may be ***| measured using a different load, if it results in data that ***| better represent the driver's behavior in standard operation. ****| In this case, the R_load subparameter is optional regardless of ****| its value and will be ignored by EDA simulators. This "regardless of its value" addition should take care of any possible discrepancy with the sentence under the [Ramp] section that says: | ... The R_load subparameter | is required if a non-standard load is used. Does this sound OK to you? Thanks, Arpad ====================================================================== |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Tue, 9 Dec 2003 09:37:01 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] BIRD85.3 - Slew Time Estimate Clarifications This is a multi-part message in MIME format. - ------_=_NextPart_001_01C3BE7B.0D6C3488 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable All, The enclosed document, BIRD85.3, is posted on behalf of John Angulo of Mentor Graphics. =20 - - Michael Mirmak Intel Corp. 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http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 11 Dec 2003 20:01:20 +0200 From: "Lior Dagan" Subject: [IBIS-Users] Eldo runs, and R,L,C package effect. Hello wise people. I am running Eldo as a simulator for extracting ibis data. I use it to verify the results as well (running eldo on the circuit modeled AND on ibis model, and comparing them) I have encountered some difficulties. 1. How does ibis determine the vinh/vinl for an output buffer? How does it decide to change states? 2. I get a large mismatch in delay, could this be the result of even spaced V/T samples? 3. I tried to change R_pkg (pins have NA on all of them) from 3m to 3E6, and it showed no effect on my eldo. Can anyone tell me why? 4. @ r_fixture=70 ohms I get a large jitter, @ r_fixture=1000, I get a much smaller jitter, how does it happen? Thanks, Lior Dagan. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 11 Dec 2003 13:29:26 -0700 From: rrwolff@micron.com Subject: [IBIS-Users] [IBIS] Open forum minutes (12/05/03) DATE: 12/11/03 SUBJECT: December 5, 2003 EIA IBIS Open Forum Meeting Minutes VOTING MEMBERS AND 2003 PARTICIPANTS Ansoft Corporation (Eric Bracken) Apple Computer Kim Helliwell Applied Simulation Technology Fred Balistreri Cadence Design Lynne Green*, Lance Wang Cisco Systems Syed Huq, Michael LaBonte, Val Mandruson, Hung Pham, Todd Westerhoff Fairchild Semiconductor (Graham Connolly) Hitachi ULSI Systems Kazuyoshi Shoji Huawei Technologies (Jiang Xiang Zhong) Intel Corporation Stephen Peters, Michael Mirmak*, Arpad Muranyi*, Eric Magnusson LSI Logic Frank Gasparik Matsushita (Panasonic) Atsuji Ito Mentor Graphics [Bob Ross], Ian Dodd, Guy de Burgh*, John Angulo*, Mike Donnelly, Weston Beal Micron Technology Randy Wolff* Molex Incorporated Gus Panella Motorola (Rick Kingen) National Semiconductor [Milt Schwartz], [Tim Coyle] NEC Electric Corporation (Itsuki Yamada) North East Systems Associates Edward Sayre, Kathy Breda, Michael Baxter Philips Semiconductor Stephanie Goedecke Siemens (& Automotive) AG Eckhard Lenski*, Michael Kindij, Burkhard Muller, Katja Koller, Andre Goerisch, Manfred Maurer, Bernard Unger, Amir Motamedi, Hartmut Ibowski, Gerald Bannert Signal Integrity Software Bob Haller, Barry Katz, Doug Burns Sigrity [Raj Raghuram] Sun Microsystems Tim Coyle Synopsys Warren Wong, Edmund Cheng Texas Instruments Thomas Fisher Teraspeed Scott McMorrow, Tom Dagostino, Kevin Simpson, Bob Ross* Time Domain Analysis Systems Dima Smolyansky, Steve Corey Zuken (& Incases) Michael Schaeder, Ralf Bruening OTHER PARTICIPANTS IN 2003: Agilent Technologies Herbert Lage Brocade Frank Yuan, Yongrue Yu Conexant Gary Felker EADS CCR Alix de la Villeguerin EFM Ekkehard Miersch EMC Corporation Brian Arsenault, John Fernandez, Simba Julian Fraunhofer IZM Ege Engin Fujitsu Tadashi Arai GEIA (Chris Denham) Hewlett-Packard Nitin Bhagwath* Independent Luca Giacotto, Kelly Green, Shinichi Maeda Infineon Tech AG Christian Sporrer Marvell Semiconductor Itzik Peleg NetLogic Microsystems Eric Hsu North Carolina State Univ. Ambrish Varma* Plexus Joseph Socha Politechnico de Torino Igor Stievano Qlogic Larry Barnes Sintecs BV Hans Klos, Bob te Nijenhuis Xilinx Susan Wu In the list above, attendees at the meeting are indicated by *. Principal members or other active members who have not attended are in parentheses. Participants who no longer are in the organization are in square brackets. UPCOMING MEETINGS The bridge numbers for future IBIS teleconferences are as follows: Date Telephone Number Bridge # Passcode January 9, 2004 1-916-356-2663 3 008-4977 All meetings are 8:00 AM to 9:55 AM Pacific Time. Meeting agendas are typically distributed seven days before each Open Forum. Minutes are typically distributed within seven days of the corresponding meeting. When calling into the meeting, provide the reservation number and passcode at the automated prompts. If asked by an operator, please request to join the IBIS Open Forum hosted by Michael Mirmak. For international dial-in numbers, please contact Michael Mirmak. NOTE: "AR" = Action Required. - -------------------------------- MINUTES - ----------------------------------- INTRODUCTIONS AND MEETING QUORUM New participant Nitin Bhagwath of Hewlett-Packard introduced himself. Currently, he is working in Roseville, California on analyzing system design issues using external vendor IBIS models. CALL FOR PATENTS Michael Mirmak called for any patents or pending patents related to the IBIS Version 4.0, 4.1, or ICM 1.0 specifications. No patents were declared. MEMBERSHIP UPDATE AND TREASURER'S REPORT Michael Mirmak mentioned that Open Forum membership holds steady at 28 organizations. An updated GEIA financial report for November has been received, and shows no change in overall revenue or expenses since the October report. Michael also reported that the 2004 membership drive has already resulted in several renewal commitments from current members and one new member. Bob Ross suggested that invoicing be conducted as soon as possible to give members and prospective members maximum flexibility in budgeting their dues. REVIEW OF MINUTES AND ARS The November 14, 2003 meeting minutes were approved with no changes. MISCELLANY/ANNOUNCEMENTS No additional announcements were made. PRESS AND WEB PAGE UPDATES Bob Ross noted that Samtec has presented a web seminar on connector modeling technologies, where ICM and IBIS were extensively discussed. A recording of the seminar can be found at: http://www.connectorwizard.com/communication/webinar/home.asp NEW MODELS AVAILABLE, LIBRARY UPDATE No new models received. OPENS FOR NEW ISSUES No new issues. MAILING LIST ADMINISTRATION Bob Ross noted that the transition of the IBIS reflectors to majordomo is complete. Reflectors for ibis-bug@eda.org and icm-bug@eda.org have been established (see below). Recovery from the recent mailing list and EDA.org site outage is complete, though some mail messages received during the outage have been lost. INTERNATIONAL/EXTERNAL PROGRESS - - JEDEC Activity Report No update - - FSA Modeling Committee Lynne Green reported that the Fabless Semiconductor Association has begun a Model Quality initiative within their Modeling Committee and has solicited participation by the IBIS Open Forum's IBIS Quality Committee. Lynne will present to the FSA in San Jose on April 15, 2004. Lynne will provide links and other background information in a future meeting. The Fabless Semicoductor Association can be found at: http://www.fsa.org - - Other Activities No update DESIGNCON 2004 SUMMIT PLANNING Bob Ross reported that he had spoken with Brock Silvey of IEC, the organizers of DesignCon. The keynote speech of the conference will take place at noon on February 2, the day of the IBIS Summit. Lunch will be provided from 12 to 12:30 PM that day, with the speech to begin at 12:30 PM and to last 30 minutes. Bob confirmed that lunch is provided to registered participants at the keynote, and suggested that the Open Forum direct Summit attendees to register for the keynote luncheon. Those registering for DesignCon before December 19 receive free admission; prices increase to $75 after December 19. An announcement regarding lunch was suggested for the IBIS reflectors, to be sent out as soon as possible. Michael Mirmak and Lynne Green will discuss the appropriate text of the announcement after the meeting. Lynne commented that perhaps reserved tables might be made available for IBIS, though Bob noted that this may not be feasible with the number of DesignCon participants. Bob observed that Syed Huq was researching refreshment options and would provide an update soon. If hotel refreshments were not available or could not be procured for the Summit, Bob suggested pricing local refreshment service. Michael will report on this at the next meeting. Michael also noted that Panasonic had provided an electronic version of their logo, which will be displayed at the IBIS booth. No other logos have been received in response to the Open Forum request. EUROPEAN DATE SUMMIT PLANNING Bob Ross reported that Cadence Design Systems, Mentor Graphics and Zuken are collaborating to sponsor the IBIS Summit at DATE. A call for papers has already been provided to the IBIS reflectors. Bob noted that the summit will run from 9 AM to 2 PM Paris local time. Six presentations have already been scheduled. Speakers and participants are welcome to contact Ralf or Bob for further details. The Summit will take place on Friday, February 20, 2004 in Paris. IBIS VERSION 4.0 PARSER FUNDING AND STATUS Michael Mirmak reported that a beta release of the IBISCHK4 parser has been received and distributed to parser code licensees. Bob Ross noted that all BUG report issues and new 4.0 specification features appear to have been closed. Without objection, the beta code was approved as the final release of the IBISCHK4 parser. The code must be edited a final time to eliminate any mention of "beta" in the output or source, and to change the version to 4.0.1. Michael will contact the parser developer to execute these changes and distribute the final release. Michael noted that the remaining funds due to the parser developer, Apt Software Avenues Pvt. Ltd., for IBISCHK4 total to US$17,635. This amount has been budgeted by the IBIS Open Forum and the GEIA for 2003 parser development. Michael called for a vote on whether to disburse the funds to the developer. The vote passed unanimously. Michael will arrange for an invoice to be provided by Apt to the GEIA. IBIS QUALITY COMMITTEE Bob Ross reported that meetings continue every two weeks. Document edits are proceeding. IBIS MODEL REVIEW COMMITTEE Lynne Green reported that no new models have been received by the committee since the last meeting. S2IBIS3 Ambrish Varma reported that he has completed a beta 0.2 version of S2IBIS3 and has posted it publicly. An announcement was distributed to the IBIS and SI-LIST reflectors. S2IBIS3 beta executables can be downloaded from: http://www.ece.ncsu.edu/erl/ibis/s2ibis3/s2ibis3.htm Feedback on the current beta version is appreciated and encouraged. ICM SPECIFICATION AND PARSER STATUS Michael Mirmak reported that the 1.0 parser code and executables have been posted to the IBIS web site on EDA.org. Announcements regarding the release were sent to the IBIS and SI-LIST reflectors. A new electronic mail address, icm-bug@eda.org, has been established to process BUG reports related to the ICM parser. Michael raised the issue of a specification change process for ICM. Bob Ross noted that several names have been proposed for ICM change documents, as the "BIRD" acronym used for IBIS may not apply. Michael suggested that participants interested in proposing a name for the ICM change process send their proposals to the IBIS Open Forum board. A suitable name will be selected at the January 9, 2004 meeting. NEW ADMINISTRATIVE ISSUES No new issues. BIRD83.2: SERIES ELEMENT CLARIFICATIONS Michael Mirmak summarized BIRD83.2, an update to BIRD83. Michael noted that several typographical errors in the BIRD text have been corrected. Further, a recommendation is made in the text that, should the BIRD be approved, a BUG should be filed to ensure that the parser properly checks the relationship between [Series Switch Groups] and the function_table_groups column under [Series Pin Mapping]. Michael called for a vote, stating at Lynne's request that the BIRD text is to be included in IBIS 4.1. BIRD83.2 was approved unanimously. BIRD84.1: DRIVER SCHEDULE CLARIFICATIONS Arpad Muranyi summarized the changes made in BIRD84.1. The ordering of the new text has been altered and the meaning of "events" relative to the EDA tool's internal stimulus pattern has been clarified. John Angulo raised some concern regarding c_comp and whether the text changes properly address how c_comp is handled by EDA tools. At present, c_comp is only meaningful within the top-level model of a [Driver Schedule] structure. Once this aspect of the specification was clarified, John withdrew his objection. Michael called for a vote. BIRD84.1 was approved unanimously. It will be included in the next release of the IBIS specification (4.1). BIRD85.2: SLEW TIME CLARIFICATIONS John Angulo introduced BIRD85.2, an update to BIRD85. The revisions now include a more precise definition of the use of R_load. Arpad Muranyi observed that the treatment of [Ramp] in the 3.2 and 4.0 specifications was quite specific -- "The R_load subparameter is required if a non-standard load is used." The current version of the BIRD does not address the fact that R_load is required, but instead states that R_load is optional. The text therefore conflicts with the [Model] definition of R_load. As this effect was not intended, Arpad suggested that the BIRD be rewritten. The current BIRD text was withdrawn from consideration by John. A BIRD85.3 version, addressing the issues above, will be distributed for discussion at the next Open Forum meeting. Arpad and John will meet outside of the Open Forum to resolve all remaining issues with the text. BIRD86: CLARIFICATION OF SUBMODEL MODE Lynne Green introduced BIRD86, regarding modes of [Submodel] operation. The current text of the [Submodel] definition permits [Submodel] modes of "Driving," "Non-Driving," and "All." However, the specification does not clearly state if "All" refers to both Driving and Non-Driving modes of operation. Additionally, the parser does not check for inconsistency between the model type (for example, Input) and the [Submodel] mode. The BIRD is intended for inclusion in IBIS 4.1 Bob Ross expressed some disagreement with the BIRD as written, as [Submodel] has traditionally been more loosely interpreted by EDA tools than the BIRD text would allow. The current BIRD text was withdrawn from consideration by Lynne. She and Bob will work separately to resolve the remaining issues. A BIRD86.1 version will be distributed for discussion at the next Open Forum meeting. IBIS VERSION 4.1 THIRD READING Michael Mirmak announced the third official "reading" of the IBIS 4.1 specification, and called for comments. Bob Ross and Michael discussed how the new multi-lingual extensions were to be included in the 4.1 specification. Bob Ross noted that a separate chapter, 6b, now includes the extensions information. Michael suggested that these should be more closely integrated with [Model] chapter 6, as the information under [Model] is modified by the extensions. Bob proposed that this be deferred until a rewrite of the specification planned for IBIS 4.2. Michael observed that, in order to allow at least three weeks to review the complete 4.1 draft once all open BIRD proposals have been addressed, the final reading and approval vote cannot take place before the Open Forum meeting on January 30, 2004. This assumes that no further BIRD reports are received and that BIRD85 and BIRD86 are resolved during the January 9 meeting. Michael also reiterated his suggestion that, to address BUG80 appropriately, a hierarchy similar to the ICM and unofficial IBIS tree document should be included within the IBIS specification itself. Participants agreed that inclusion of the tree should be deferred until IBIS 4.2 Bob observed that, similar to the tree, the BNF description for the IBIS specification has not been revised since IBIS 3.0. This should be updated, though it may be released only as a separate document. A draft version of IBIS version 4.1 is available on the web. Both an ASCII text and an Adobe PDF version are available at: http://www.eda.org/pub/ibis/ver4.1_wip/ Note that the text of BIRD83 and BIRD84 has been included in the latest draft. NEXT MEETING The next Open Forum teleconference has been scheduled for January 9, 2004 from 8:00 AM to 10:00 AM US Pacific Standard Time. Votes regarding the approval of BIRD85.3 and BIRD86.1 are scheduled. Thanks to all Open Forum participants and contributors in 2003! ======================================================================== ==== NOTES IBIS CHAIR: Michael Mirmak (916) 356-4261, Fax: (916) 377-1046 michael.mirmak@intel.com Senior Analog Engineer, Intel Corporation M/S FM6-45 1900 Prairie City Rd. Folsom, CA 95630 VICE CHAIR: Lynne Green (425) 788-0412, Fax (425) 788-4289 lgreen@cadence.com Senior Modeling Engineer, Cadence Design Systems 320 120th Ave NE, Suite B-103, Bellevue, WA 98005-3016 SECRETARY: Randy Wolff (208) 363-1764, Fax: (208) 368-3475 rrwolff@micron.com Simulation Engineer, Micron Technology, Inc. 8000 S. Federal Way Mail Stop: 1-711 Boise, ID 83707-0006 LIBRARIAN: Roy Leventhal (847) 590-9398 roy.leventhal@ieee.org Consultant, Leventhal Design and Communications 1924 North Burke Drive Arlington Heights, Illinois 60004 WEBMASTER: Syed Huq (408) 525-3399, Fax: (408) 526-5504 shuq@cisco.com Manager, Hardware Engineering, Cisco Systems 170 West Tasman Drive San Jose, CA 95134-1706 POSTMASTER: John Angulo (425) 497-5077, Fax: (425) 881-1008 John_angulo@mentor.com Development Engineer, Mentor Graphics 14715 N.E. 95th Street, Suite 200 Redmond, WA 98052 This meeting was conducted in accordance with the EIA Legal Guides and EIA Manual of Organization and Procedure. The following e-mail addresses are used: majordomo@eda.org In the body, for the IBIS Open Forum Reflector: subscribe ibis In the body, for the IBIS Users' Group Reflector: subscribe ibis-users Help and other commands: help ibis-request@eda.org To join, change, or drop from either the IBIS Open Forum Reflector (ibis@eda.org), the IBIS Users' Group Reflector (ibis-users@eda.org) or both. State your request. ibis-info@eda.org To obtain general information about IBIS, to ask specific questions for individual response, and to inquire about joining the EIA-IBIS Open Forum as a full Member. ibis@eda.org To send a message to the general IBIS Open Forum Reflector. This is used mostly for IBIS Standardization business and future IBIS technical enhancements. Job posting information is not permitted. ibis-users@eda.org To send a message to the IBIS Users' Group Reflector. This is used mostly for IBIS clarification, current modeling issues, and general user concerns. Job posting information is not permitted. ibis-bug@eda.org To report ibischk3 parser bugs. The Bug Report Form Resides on eda.org in /pub/ibis/bugs/ibis_bugs/bugform.txt along with reported bugs. icm-bug@eda.org To report icmchk1 parser bugs. The Bug Report Form Resides on eda.org in /pub/ibis/bugs/icm_bugs/icm_bugform.txt along with reported bugs. To report s2ibis, s2ibis2 and s2iplt bugs, use the Bug Report Forms which reside under eda.org in /pub/ibis/bugs/s2ibis/bugs2i.txt, /pub/ibis/bugs/s2ibis2/bugs2i2.txt, and /pub/ibis/bugs/s2iplt/bugsplt.txt respectively. Information on IBIS technical contents, IBIS participants and actual IBIS models are available on the IBIS Home page: http://www.eigroup.org/ibis/ibis.htm Check the IBIS file directory on eda.org for more information on previous discussions and results: http://www.eda.org/pub/ibis/directory.html Other brands and names are the property of their respective owners. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 11 Dec 2003 23:48:26 +0200 From: "Hazem Hegazy" Subject: RE: [IBIS-Users] Eldo runs, and R,L,C package effect. Hi Lior, I made a lot of IBIS models using Eldo in the past. Also I used its IO element a lot and compare the result with the real buffer circuit; it always gives very good results. I can't judge from what you are saying, can you send me the cir file of Eldo WITHOUT the sub circuits and all the confidential stuff? BR, Hazem Hegazy General Manager Quality Modeling services, QualiM. www.qualim.com Tel:+20106052154 Fax: +2024043350 - -----Original Message----- From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Lior Dagan Sent: Thursday, December 11, 2003 8:01 PM To: Ibis-Users (E-mail) Subject: [IBIS-Users] Eldo runs, and R,L,C package effect. Hello wise people. I am running Eldo as a simulator for extracting ibis data. I use it to verify the results as well (running eldo on the circuit modeled AND on ibis model, and comparing them) I have encountered some difficulties. 1. How does ibis determine the vinh/vinl for an output buffer? How does it decide to change states? 2. I get a large mismatch in delay, could this be the result of even spaced V/T samples? 3. I tried to change R_pkg (pins have NA on all of them) from 3m to 3E6, and it showed no effect on my eldo. Can anyone tell me why? 4. @ r_fixture=70 ohms I get a large jitter, @ r_fixture=1000, I get a much smaller jitter, how does it happen? Thanks, Lior Dagan. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 11 Dec 2003 15:52:12 -0800 (PST) From: "v.veeresh babu" Subject: [IBIS-Users] IBIS for SSTL - --0-662960099-1071186732=:95647 Content-Type: text/plain; charset=us-ascii Hi all, I am new to IBIS, I want to generate IBIS model for SSTL pad, should I generate I/O as well as Input, or either of one? and where can I find SSTL IBIS models. Thanks, Veeresh - --------------------------------- Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing - --0-662960099-1071186732=:95647 Content-Type: text/html; charset=us-ascii
Hi all,
 
  I am new to IBIS, I want to generate IBIS model for SSTL pad, should I generate I/O  as well as Input, or either of one? and where can I find SSTL IBIS models.
 
Thanks,
Veeresh
 
 
 

Do you Yahoo!?
New Yahoo! Photos - easier uploading and sharing - --0-662960099-1071186732=:95647-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 12 Dec 2003 16:54:53 -0500 From: "Lynne Green" Subject: [IBIS-Users] Second Call for Papers for IBIS Summit at DesignCon (wrong subject the first time) - ----------------------------------------------------------------------- IBIS SUMMIT at DesignCon SECOND CALL FOR PARTICIPATION & PRESENTATIONS - ----------------------------------------------------------------------- I B I S S U M M I T M E E T I N G Time/Date: Monday February 2, 2004 8:00 AM to 5 PM Location: Santa Clara Convention Center Santa Clara, CA Content: Presentations and Discussions Purpose: Solicit and Exchange IBIS Model Related Information and Ideas. Sponsors: DesignCon If your company would be interested in sponsoring this event, please contact Lynne Green . Benefits to sponsors include formal recognition at the meeting and acknowledgement in the Calls for Papers and meeting minutes. Your financial support strengthens the organization by allowing IBIS to focus resources on industry activities rather than raising money, and you will receive generous thanks for your support. DesignCon Conference February 2-5, 2004 Santa Clara Convention Center Santa Clara, CA You must register to attend the lunch on Monday (details below). Exhibit registration is Free if you register before December 19, 2003. See for more information. BACKGROUND DesignCon is the premier annual Silicon Valley event for the electronic design automation (EDA) and semiconductor industry. Topics of current interest to the EIA IBIS Open Forum are addressed at DesignCon. This meeting will be conducted as a formal IBIS Summit Meeting. Presentations are expected to be available and archived in an electronic format, and minutes of the meeting will be issued. Any pending formal decisions (votes) will be announced at least two weeks prior to the meeting. CALL FOR PARTICIPANTS People involved in IBIS Model development, EDA tool development, and digital circuit design are invited to participate in the Summit meeting. If you plan to participate, please register with the information below: Name: E-mail address: Company: Telephone: Send to: Lynne Green Those wishing to attend lunch at the 2004 DesignCon IBIS Summit must register for DesignCon at the link below. This is a separate registration from the IBIS Summit registration. If you register for the Exhibits before December 19th, registration (including the lunch) is free. After Dec. 19th, the cost will be $75. If you are unsure whether you will attend, we recommend registering before Dec 19th. The IBIS Summit attendees who have registered with DesignCon will attend lunch and the TechForum keynote speech on Monday. The speaker is Jan Rabaey of UC, Berkeley. CALL FOR PRESENTATIONS We are seeking presentations from individuals who have experiences of interest to the IBIS modeling community. In the past, these have included demonstrations of modeling techniques, explanations of behavioral algorithms and descriptions of difficulties encountered in specific applications. Of particular interest are topics related to model correlation, modeling building experiences and comparisons to other modeling methods. Presentations may be addressed to any and all levels of IBIS experience, from beginning to advanced. Format of Presentation: LCD Projection with Windows laptop. Time: 15-30 Minutes Electronic Archival: We request electronic versions so that the presentations can be archived and also made available to non-attendees. Formats used in the past have been text, Power Point, Word, Postscript, and Acrobat. Electronic presentations should be made available by January 26, 2004 for uploading and copying to the presentation laptop. If you plan a presentation, please supply Title: Presenter: E-mail address: Company: Telephone: Estimated Time: Send this to: Lynne Green AGENDA The agenda includes presentations, discussions, breaks, and a luncheon (registration with DesignCon required for lunch). This will be developed as presentation proposals are received. The following individuals have signed up to present at the summit (presentation titles are tentative). - IBIS Chair's Report, Michael Mirmak, Intel - IBIS Roadmap, Michael Mirmak, Intel - JEITA Proposal, Ajutsi Ito, Panasonic - Model Quality, Bob Haller & Barry Katz, SiSoft - Adding On-Chip Capacitance in IBIS Format for SSO Simulation, Raymond Chen, Sigrity - Die V-T Tables from Part Measurements, Bob Ross, Teraspeed - Lunch: The IBIS Summit attendees who have registered with DesignCon will attend the lunch and TechForum keynote speech on Monday. LIST OF NEARBY HOTELS See for travel directions, hotels and other information. - ----------------------------------------------------------------- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 12 Dec 2003 13:54:00 -0800 (PST) From: "Lynne Green" Subject: [IBIS-Users] Date: Fri, 12 Dec 2003 16:53:40 -0500 - ----------------------------------------------------------------------- IBIS SUMMIT at DesignCon SECOND CALL FOR PARTICIPATION & PRESENTATIONS - ----------------------------------------------------------------------- I B I S S U M M I T M E E T I N G Time/Date: Monday February 2, 2004 8:00 AM to 5 PM Location: Santa Clara Convention Center Santa Clara, CA Content: Presentations and Discussions Purpose: Solicit and Exchange IBIS Model Related Information and Ideas. Sponsors: DesignCon If your company would be interested in sponsoring this event, please contact Lynne Green . Benefits to sponsors include formal recognition at the meeting and acknowledgement in the Calls for Papers and meeting minutes. Your financial support strengthens the organization by allowing IBIS to focus resources on industry activities rather than raising money, and you will receive generous thanks for your support. DesignCon Conference February 2-5, 2004 Santa Clara Convention Center Santa Clara, CA You must register to attend the lunch on Monday (details below). Exhibit registration is Free if you register before December 19, 2003. See for more information. BACKGROUND DesignCon is the premier annual Silicon Valley event for the electronic design automation (EDA) and semiconductor industry. Topics of current interest to the EIA IBIS Open Forum are addressed at DesignCon. This meeting will be conducted as a formal IBIS Summit Meeting. Presentations are expected to be available and archived in an electronic format, and minutes of the meeting will be issued. Any pending formal decisions (votes) will be announced at least two weeks prior to the meeting. CALL FOR PARTICIPANTS People involved in IBIS Model development, EDA tool development, and digital circuit design are invited to participate in the Summit meeting. If you plan to participate, please register with the information below: Name: E-mail address: Company: Telephone: Send to: Lynne Green Those wishing to attend lunch at the 2004 DesignCon IBIS Summit must register for DesignCon at the link below. This is a separate registration from the IBIS Summit registration. If you register for the Exhibits before December 19th, registration (including the lunch) is free. After Dec. 19th, the cost will be $75. If you are unsure whether you will attend, we recommend registering before Dec 19th. The IBIS Summit attendees who have registered with DesignCon will attend lunch and the TechForum keynote speech on Monday. The speaker is Jan Rabaey of UC, Berkeley. CALL FOR PRESENTATIONS We are seeking presentations from individuals who have experiences of interest to the IBIS modeling community. In the past, these have included demonstrations of modeling techniques, explanations of behavioral algorithms and descriptions of difficulties encountered in specific applications. Of particular interest are topics related to model correlation, modeling building experiences and comparisons to other modeling methods. Presentations may be addressed to any and all levels of IBIS experience, from beginning to advanced. Format of Presentation: LCD Projection with Windows laptop. Time: 15-30 Minutes Electronic Archival: We request electronic versions so that the presentations can be archived and also made available to non-attendees. Formats used in the past have been text, Power Point, Word, Postscript, and Acrobat. Electronic presentations should be made available by January 26, 2004 for uploading and copying to the presentation laptop. If you plan a presentation, please supply Title: Presenter: E-mail address: Company: Telephone: Estimated Time: Send this to: Lynne Green AGENDA The agenda includes presentations, discussions, breaks, and a luncheon (registration with DesignCon required for lunch). This will be developed as presentation proposals are received. The following individuals have signed up to present at the summit (presentation titles are tentative). - IBIS Chair's Report, Michael Mirmak, Intel - IBIS Roadmap, Michael Mirmak, Intel - JEITA Proposal, Ajutsi Ito, Panasonic - Model Quality, Bob Haller & Barry Katz, SiSoft - Adding On-Chip Capacitance in IBIS Format for SSO Simulation, Raymond Chen, Sigrity - Die V-T Tables from Part Measurements, Bob Ross, Teraspeed - Lunch: The IBIS Summit attendees who have registered with DesignCon will attend the lunch and TechForum keynote speech on Monday. LIST OF NEARBY HOTELS See for travel directions, hotels and other information. - ----------------------------------------------------------------- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Sun, 14 Dec 2003 21:55:32 +0100 From: Ralf Bruening Subject: [IBIS-Users] E U R O P E A N I B I S S U M M I T M E E T I N G 2004 - Second Announcement & Call for Participation+Presentations To All: We have been holding successful European IBIS Summit Meetings for the past six years. This year we are again holding a meeting along with DATe 04 on Friday, February 20, 2004. The purpose is to promote communication among users and developers of IBIS models in Europe. The meeting is free and open to everyone. However, you will have to register for the exhibition at DATe (to get access to the meeting room). Refreshments are planned. Below is some information on the IBIS Summit and some related events. You are invited to register and also to submit presentation proposals. Ralf Bruening Product Manager High Speed Design ZUKEN EMC Technology Center - ----------------------------------------------------------------- E U R O P E A N I B I S S U M M I T M E E T I N G F I R S T A N N O U N C E M E N T Time/Date: 9:00 AM - 2:00 PM, Friday, February 20, 2003 Location: Meeting room @ CNIT, La Defense (International Congress Center) Paris, France (where DATE 2004 is being held) (Free DATE 2004 exhibition registration for room entry, see URL below) Content: Presentations and Discussions Purpose: Solicit and Exchange IBIS Model Related Information and Ideas Sponsors: Zuken, Mentor Graphics, Cadence Design Systems. If your company would be interested in sponsoring this event, please contact Lynne Green or Ralf Bruening . Benefits to sponsors include formal recognition at the meeting and mention in the Calls for Papers and meeting minutes. Your financial support strengthens the organization by allowing IBIS to focus resources on industry activities rather than raising money, and you will receive generous thanks for your support. DATE 2004 Conference: February 16-20, 2004. The IBIS meeting is scheduled the day after the DATE 2004 exhibition ends. Location: CNIT Congress Center, Paris, France DATE URL: http://www.date-conference.com Background: DATE (Design, Automation, and Test in Europe) is the only European event dedicated to electronic system design and test. Topics of current interest to the EIA IBIS Open Forum are addressed at DATE. This meeting will be conducted as a formal IBIS Summit Meeting. Presentations are expected to be available and archived in an electronic format, and minutes of the meeting will be issued. Any pending formal decisions (votes) will be announced at least two weeks prior to the meeting. Topics and presentations may include (list is open for further contributions): - Submitted Presentations on IBIS Topics (See below) - Information about the most recent IBIS Developments - Less formal Ad Hoc Presentations and Discussions - IBIS and Modelling Questions and Answers The meeting is free and open to everyone. However, you will have to register for the exhibition at DATe (to get access to the meeting room). Refreshments are planned. Below is some information on the IBIS Summit and some related events. You are invited to register and also to submit presentation proposals. CALL FOR PARTICIPANTS People involved in IBIS Model development, EDA tool development, and digital circuit design are invited to participate in the European IBIS Summit meeting. If you plan to participate, please register with the information below (deadline, Febrary 13th, 2003): Name: E-mail address: Company: Telephone: Send to: Ralf Bruening (ralf.bruening@zuken.de) CALL FOR PRESENTATIONS We are seeking presentations from individuals who have IBIS Experiences or issues. Some suggested subjects of interest are: - IBIS Model Development Experiences - Company IBIS Standards and Requirements - Generating and Validating IBIS Models - Future IBIS Requirements - EMC/EMI IBIS Issues - Experiences using IBIS in the PCB Design process Format of Presentation: LCD or Overhead Projections Time: 15-30 Minutes Electronic Archival: We request electronic versions so that the presentations can be archived and also made available to non-attendees. Formats used in the past have been text, Power Point, Word, Postscript, and Acrobat PDF. Electronic presentations should be made available by February the 13th, 2003. Otherwise the presentor will be expected to provide 30 copies for distribution. If you plan a presentation, please supply Title: Presenter: E-mail address: Company: Telephone: Estimate Time: Send this to both: Ralf Bruening (ralf.bruening@zuken.de) AGENDA The agenda includes presentations, discussions, breaks, a luncheon (which is planned to be provided). This will be developed as presentation proposals are received. LIST OF NEARBY HOTELS See for travel directions, hotels and other information. Looking forward to meeting you at DATe 2004 in Paris Ralf Bruening - ------------------------------------------------------------- Ralf Bruening - Product Manager - ZUKEN EMC Technology Center High Speed Solution Business - Vattmannstr.3 -33100 Paderborn Phone: +49 5251 150 600 (direct: 621) - FAX: +49 5251 150 700 Mobile: +49 170 4228512 - Alternative Mobile: +49 172 9070675 Email: ralf.bruening@zuken.de - WWW: http://www.zuken.com - ------------------------------------------------------------- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Mon, 15 Dec 2003 13:40:26 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] IBIS 4.0 parser (ibischk4) on-line! The IBIS Open Forum is pleased to announce that the IBIS 4.0 specification golden parser "ibischk4" is on-line and available for download! Executables for Linux, HP 10, HP 11, Sun 5 and MS-DOS/Windows can be found at: http://www.eda.org/pub/ibis/ibischk4/ Bugs may be reported using the "bugform.txt" template at http://www.eda.org/pub/ibis/ibis_bugs/. Please send completed reports to ibis-bug@eda.org. - Michael Mirmak Intel Corp. Chair, EIA/IBIS Open Forum |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Wed, 17 Dec 2003 16:41:42 -0500 From: "Lynne Green" Subject: [IBIS-Users] Email change, IBIS Summit at DesignCon The email address for IBIS Summit registration and paper submissions has changed. The new address is lgreen22@mindspring.com. REMINDER: The registration deadline for a FREE DesignCon pass, which includes the Monday lunch, is this Friday, Dec 19th. After that date, the cost is $75. Happy holidays! Lynne Green Vice-Chair, IBIS |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 21 Nov 2003 17:29:24 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] BIRD86 - Clarification of Submodel Mode This is a multi-part message in MIME format. - ------_=_NextPart_001_01C3B098.0FFC9190 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The enclosed document, BIRD86, is submitted on behalf of Lynne Green of Cadence Design Systems, for consideration at the December 5, 2003 IBIS Open Forum teleconference. - - Michael Mirmak Intel Corporation. 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------_=_NextPart_001_01C3B098.0FFC9190-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 21 Nov 2003 17:31:59 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] BIRD84.1 - Driver Schedule Clarifications This is a multi-part message in MIME format. - ------_=_NextPart_001_01C3B098.6C5D7575 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The enclosed document, BIRD84.1, is submitted on behalf of Arpad Muranyi of Intel Corp., for consideration at the December 5, 2003 IBIS Open Forum teleconference. - - Michael Mirmak Intel Corporation. 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http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 21 Nov 2003 18:15:29 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] IBIS ICM 1.0.0 Parser On-line! The IBIS Open Forum is pleased to announce that the IBIS Interconnect Modeling (ICM) specification parser 1.0.0 is on-line and available for download! The source code plus compilations for Linux and Microsoft DOS/Windows systems can be found at: http://www.eda.org/pub/ibis/icmchk1/ Additional compilations will be posted as they become available. Please note that the source code is being released under the terms of the GPL. Details can be found in the documentation accompanying the code. Bugs may be reported using the "icm_bugform.txt" template at: http://www.eda.org/pub/ibis/icm_bugs/ Please send completed reports to icm-bug@eda.org. A change process for the ICM specification, similar to the IBIS BIRD, will be announced at an upcoming IBIS Open Forum meeting. - Michael Mirmak Intel Corp. Chair, EIA/IBIS Open Forum |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Sun, 23 Nov 2003 13:01:42 -0700 From: rrwolff@micron.com Subject: [IBIS-Users] [IBIS] Open forum minutes (11/14/03) DATE: 11/23/03 SUBJECT: November 14, 2003 EIA IBIS Open Forum Meeting Minutes VOTING MEMBERS AND 2003 PARTICIPANTS LIST: Ansoft Corporation (Eric Bracken) Apple Computer Kim Helliwell Applied Simulation Technology Fred Balistreri Cadence Design Lynne Green*, Lance Wang Cisco Systems Syed Huq, Michael LaBonte, Val Mandruson, Hung Pham, Todd Westerhoff Fairchild Semiconductor (Graham Connolly) Hitachi ULSI Systems Kazuyoshi Shoji Huawei Technologies (Jiang Xiang Zhong) Intel Corporation Stephen Peters, Michael Mirmak*, Arpad Muranyi*, Eric Magnusson LSI Logic Frank Gasparik Matsushita (Panasonic) Atsuji Ito Mentor Graphics [Bob Ross], Ian Dodd, Guy de Burgh*, John Angulo*, Mike Donnelly, Weston Beal Micron Technology Randy Wolff* Molex Incorporated Gus Panella Motorola (Rick Kingen) National Semiconductor [Milt Schwartz], [Tim Coyle] NEC Electric Corporation (Itsuki Yamada) North East Systems Associates Edward Sayre, Kathy Breda, Michael Baxter Philips Semiconductor (D.C. Sessions), Stephanie Goedecke Siemens (& Automotive) AG Eckhard Lenski*, Michael Kindij, Burkhard Muller, Katja Koller, Andre Goerisch, Manfred Maurer, Bernard Unger, Amir Motamedi, Hartmut Ibowski, Gerald Bannert Signal Integrity Software Bob Haller, Barry Katz, Doug Burns Sigrity [Raj Raghuram] Sun Microsystems Tim Coyle Synopsys Warren Wong, Edmund Cheng Texas Instruments Thomas Fisher Teraspeed Scott McMorrow, Tom Dagostino, Kevin Simpson, Bob Ross* Time Domain Analysis Systems Dima Smolyansky, Steve Corey Zuken (& Incases) Michael Schaeder, Ralf Bruening OTHER PARTICIPANTS IN 2003: Agilent Technologies Herbert Lage Brocade Frank Yuan, Yongrue Yu Conexant Gary Felker EADS CCR Alix de la Villeguerin EFM Ekkehard Miersch EMC Corporation Brian Arsenault, John Fernandez, Simba Julian Fraunhofer IZM Ege Engin Fujitsu Tadashi Arai GEIA (Chris Denham) Independent Luca Giacotto, Kelly Green*, Shinichi Maeda Infineon Tech AG Christian Sporrer Marvell Semiconductor Itzik Peleg NetLogic Microsystems Eric Hsu North Carolina State Univ. Ambrish Varma* Plexus Joseph Socha Politechnico de Torino Igor Stievano Qlogic Larry Barnes Sintecs BV Hans Klos, Bob te Nijenhuis SiQual (Rob Hinz) Via Technologies (Weber Chuang) Xilinx Susan Wu In the list above, attendees at the meeting are indicated by *. Principal members or other active members who have not attended are in parentheses. Participants who no longer are in the organization are in square brackets. Upcoming Meetings: The bridge numbers for future IBIS teleconferences are as follows: Date Telephone Number Bridge # Passcode December 5, 2003 1-916-356-2663 4 685-5954 All meetings are 8:00 AM to 9:55 AM Pacific Time. Meeting agendas are typically distributed seven days before each Open Forum. Minutes are typically distributed within seven days of the corresponding meeting. When calling into the meeting, provide the reservation number and passcode at the automated prompts. If asked by an operator, please request to join the IBIS Open Forum hosted by Michael Mirmak. For international dial-in numbers, please contact Michael Mirmak. NOTE: "AR" = Action Required. - -------------------------------- MINUTES ----------------------------------- INTRODUCTIONS AND MEETING QUORUM No new participants. CALL FOR PATENTS Michael Mirmak called for any patents or pending patents related to the IBIS Version 4.0, 4.1, or ICM 1.0 specifications. No patents were declared. MEMBERSHIP UPDATE AND TREASURER'S REPORT Michael Mirmak mentioned that Open Forum membership holds steady at 28 organizations. An updated GEIA financial report is expected at the end of November. REVIEW OF MINUTES AND ARS The October 21, 2003 summit minutes and the October 24, 2003 meeting minutes were approved with no changes. MISCELLANY/ANNOUNCEMENTS John Angulo noted that, on November 10 and 11, the IBIS mailing lists were inoperative. While service has been restored, some messages may have to be resent. Bob Ross announced that he was working with EDA system operators to move all of the IBIS mailing reflector addresses to majordomo. At present, list administrators are relying on bounced messages to answer traffic on ibis-info and ibis-request. PRESS AND WEB PAGE UPDATES See the ICM Specification update below. NEW MODELS AVAILABLE, LIBRARY UPDATE No new models received. OPENS FOR NEW ISSUES No new issues. INTERNATIONAL/EXTERNAL PROGRESS - - JEDEC Activity Report Lynne Green noted that planning for the JEDEX 2004 conference continues. More information can be found at: http://www.jedex.com/ - - IEC 62014-3 (ICEM) Integrated Circuit Electromagnetic Model Proposal Bob Ross reported that Todd Hubing of the University of Missouri at Roll is a keynote speaker at EMC Compo 04: http://emccompo.eseo.fr/ His work is related to the IBIS BIRD74.6 regarding EMI Parameters. Also, a new link exists to a private site related to ICEM, a separate approach to EMC issues that leverage off of IBIS. http://www.ic-emc.org/ Because regular activity reports are not available, this will be dropped as a regular agenda item. DESIGNCON 2004 SUMMIT DISCUSSION Michael Mirmak reported that a schedule of calls for papers and other announcement mailings has been provided to the IEC. Guy de Burgh and Michael Mirmak will work together to request 8.5" x 11" posters from Open Forum member organizations to display at the IBIS floor booth. Bob Ross noted that several companies do not traditionally display or distribute their logos. Michael also observed that mailings requesting additional funds for summit support were being distributed to Open Forum members. EUROPEAN DATE SUMMIT PLANNING Bob Ross reported that Ralf Bruening of Zuken (along with Eckhard Lenski of Siemens) is proceeding with DATE 2004 planning and has reserved a room. The Summit is currently scheduled for Friday, February 20 in Paris, from 9 AM to 2 PM local time. Teleconferencing is not planned. We are still looking for additional financial sponsorship (mostly for lunch) for the meeting. Bob stated that he is helping out with the arrangements and securing speakers. Speakers and participants are welcome to contact Ralf or Bob for further details. IBIS VERSION 4.0 PARSER FUNDING AND STATUS Michael Mirmak reported that he had discussed the parser status with Atul Agarwal, the parser developer. All 4.0 features have been included, and only two BUG reports remain to be resolved in the code. Atul is willing to distribute a beta release with the latest updates once fixes to BUG68 and BUG73 are decided upon by the Open Forum. If this beta meets with the Open Forum's approval, this code would become the final 4.0 parser and all IBISCHK4 activities could be closed. Bob Ross noted a few small issues regarding the 4.0 features in the current code, including extra spaces in package model names and a typographical error in one warning report. These will be forwarded to Atul for inclusion in the beta code. Executables for the alpha version of IBISCHK4 are available for download: http://www.vhdl.org/pub/ibis/ibischk4_beta IBIS QUALITY COMMITTEE Bob Ross reported that meetings continue every two weeks, with the next meeting scheduled for November 18. Eckhard Lenski's IBIS error level document is currently under consideration by the Committee. IBIS MODEL REVIEW COMMITTEE Lynne Green reported that no new models have been received by the committee since the last meeting. S2IBIS3 Ambrish Varma reported that he has received more feedback from S2IBIS3 users related to general programming issues rather than specific IBIS keywords. A new release is due shortly and will be announced through the appropriate distribution lists and the Open Forum. S2IBIS3 beta executables can be downloaded from: http://www.ece.ncsu.edu/erl/ibis/s2ibis3/s2ibis3.htm Feedback on the current beta version is appreciated and encouraged. IBIS ICM STATUS Kelly Green reported that the beta ICM parser has been completed and distributed for internal review. A final 1.0 release is planned to address some naming issues, treatment of tabs, and a precision difference between operating systems. This 1.0 release is anticipated within one week of the meeting. A Linux version of the beta has already been compiled, with Solaris 8, HP-UX 11 and Microsoft Windows versions also either in progress or completed. John Angulo and Kelly will resolve the precision issues offline. An appropriate announcement regarding ICM 1.0 parser availability will be made on the distribution lists once several compiled editions become available. Kelly noted that he has made assumptions about proper parser performance where the specification was either self-contradictory or ambiguous. Michael mentioned that an "ICM BUG" form and subdirectory were available and that parser bugs could be officially noted using a new email address, icm-bug@eda.org, which will be announced with the 1.0 parser release. An "ICM BIRD" process for ICM specification changes will be discussed at the next meeting. NEW ADMINISTRATIVE ISSUES No new issues. BIRD83.1: SERIES ELEMENT CLARIFICATIONS Michael Mirmak introduced BIRD83.1, an update to BIRD83. Michael noted that the BIRD text now specifically addresses the current behavior of the parser when analyzing [Series MOSFET] and [Series Switch Groups]. Michael also mentioned that Bob Ross's feedback on whether a header for the column "function_table_groups" is sufficient to cause a parser response has been addressed as well. Bob Ross noted some typographical issues which made the exact nature of the changes confusing. He also observed that the changes required to the parser, including a BUG report, should be noted explicitly in the BIRD text. The current BIRD text was withdrawn from consideration by Michael Mirmak. A BIRD83.2 version, addressing the issues above, will be distributed for discussion at the next Open Forum meeting. BIRD84: DRIVER SCHEDULE CLARIFICATIONS Arpad Muranyi mentioned that he had continued his discussion with Weston Beal of Mentor Graphics on the proper method to use in explaining how internal delays are triggered. To clarify, the stimulus provided by the simulation tool into the buffer is the "master stimulus" or the event which actually triggers a delay. A "derived stimulus" would be some internal event related to the expiration of an internal delay. Bob Ross noted that the text does not clearly state that all events and delays are related to the master clock of the simulation tool. A BIRD84.1 version, addressing the issues above, will be distributed for discussion at the next Open Forum meeting. BIRD85: SLEW TIME CLARIFICATIONS John Angulo introduced BIRD85.1, an update to BIRD85. The revisions now limit the attention of the reader to the context of [External Model]. Arpad Muranyi suggested that more specific instructions should be given to the user on what should be done with Rload where single-ended resistive terminations are not appropriate. Any automatic assumptions by the tool or specification/parser should be explicitly noted. The current BIRD text was withdrawn from consideration by John. A BIRD85.2 version, addressing the issues above, will be distributed for discussion at the next Open Forum meeting. IBIS VERSION 4.1 FIRST READING Michael Mirmak announced the second official "reading" of the IBIS 4.1 specification, and called for comments. None were issued at the meeting, Bob Ross noted a few clarifications to the IBIS 4.1 approval process. First, the status of BIRD83, BIRD84 and BIRD85 must be resolved and the approved changes folded into the 4.1 text. Secondly, IBISCHK4 must be completed and distributed before 4.1 may be considered for approval. Finally, at least two weeks of review must be completed before an approval vote can be brought before the Open Forum. This will delay a 4.1 final reading and approval vote until the January 9, 2004 Open Forum meeting. Bob and Michael will make the required text changes to the draft specification as the BIRDs are resolved. A draft version of IBIS version 4.1 is available on the web. Both an ASCII text and an Adobe PDF version are available at: http://www.eda.org/pub/ibis/ver4.1_wip/ BUG81: Waveform Mismatch Error with Small Voltage Step Bob Ross introduced BUG81, to address I-V vs. V-t mismatches identified by the parser for I-V table points near 0V where the voltage step is less than 1e-5. This is apparently related to parser code issues reported in BUG68 and BUG73. Both Bob and John Angulo have confirmed that the fix to the earlier BUGs also addresses BUG81. The BUG was filed as "annoying," with low priority. John Angulo mentioned that he, Arpad Muranyi, and others have arrived at a consensus as to the proper method for calculating I-V vs. V-t endpoint mismatch percentages to be reported by the parser. Arpad suggested that he and Ambrish Varma may wish to check and perhaps update the code for their respective tools to match the parser's matching algorithm. NEXT MEETING: The next Open Forum teleconference has been scheduled for December 5 from 8:00 AM to 10:00 AM US Pacific Standard Time. Votes regarding the approval of BIRD83, BIRD84 and BIRD85 are scheduled. A vote regarding the allocation of IBISCHK4 parser funds is also scheduled. ============================================================================ NOTES IBIS CHAIR: Michael Mirmak (916) 356-4261, Fax: (916) 377-1046 michael.mirmak@intel.com Senior Analog Engineer, Intel Corporation M/S FM6-45 1900 Prairie City Rd. Folsom, CA 95630 VICE CHAIR: Lynne Green (425) 788-0412, Fax (425) 788-4289 lgreen@cadence.com Senior Modeling Engineer, Cadence Design Systems 320 120th Ave NE, Suite B-103, Bellevue, WA 98005-3016 SECRETARY: Randy Wolff (208) 363-1764, Fax: (208) 368-3475 rrwolff@micron.com Simulation Engineer, Micron Technology, Inc. 8000 S. Federal Way Mail Stop: 1-711 Boise, ID 83707-0006 LIBRARIAN: Roy Leventhal (847) 590-9398 roy.leventhal@ieee.org Consultant, Leventhal Design and Communications 1924 North Burke Drive Arlington Heights, Illinois 60004 WEBMASTER: Syed Huq (408) 525-3399, Fax: (408) 526-5504 shuq@cisco.com Manager, Hardware Engineering, Cisco Systems 170 West Tasman Drive San Jose, CA 95134-1706 POSTMASTER: John Angulo (425) 497-5077, Fax: (425) 881-1008 John_angulo@mentor.com Development Engineer, Mentor Graphics 14715 N.E. 95th Street, Suite 200 Redmond, WA 98052 This meeting was conducted in accordance with the EIA Legal Guides and EIA Manual of Organization and Procedure. The following e-mail addresses are used: majordomo@eda.org In the body, for the IBIS Open Forum Reflector: subscribe ibis In the body, for the IBIS Users' Group Reflector: subscribe ibis-users Help and other commands: help ibis-request@eda.org To join, change, or drop from either the IBIS Open Forum Reflector (ibis@eda.org), the IBIS Users' Group Reflector (ibis-users@eda.org) or both. State your request. ibis-info@eda.org To obtain general information about IBIS, to ask specific questions for individual response, and to inquire about joining the EIA-IBIS Open Forum as a full Member. ibis@eda.org To send a message to the general IBIS Open Forum Reflector. This is used mostly for IBIS Standardization business and future IBIS technical enhancements. Job posting information is not permitted. ibis-users@eda.org To send a message to the IBIS Users' Group Reflector. This is used mostly for IBIS clarification, current modeling issues, and general user concerns. Job posting information is not permitted. ibis-bug@eda.org To report ibischk3 parser bugs. The Bug Report Form Resides on eda.org in /pub/ibis/bugs/ibis_bugs/bugform.txt along with reported bugs. icm-bug@eda.org To report icmchk1 parser bugs. The Bug Report Form Resides on eda.org in /pub/ibis/bugs/icm_bugs/icm_bugform.txt along with reported bugs. To report s2ibis, s2ibis2 and s2iplt bugs, use the Bug Report Forms which reside under eda.org in /pub/ibis/bugs/s2ibis/bugs2i.txt, /pub/ibis/bugs/s2ibis2/bugs2i2.txt, and /pub/ibis/bugs/s2iplt/bugsplt.txt respectively. Information on IBIS technical contents, IBIS participants and actual IBIS models are available on the IBIS Home page: http://www.eigroup.org/ibis/ibis.htm Check the IBIS file directory on eda.org for more information on previous discussions and results: http://www.eda.org/pub/ibis/directory.html Other brands and names are the property of their respective owners. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 28 Nov 2003 16:10:57 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] Agenda, IBIS Open Forum Teleconference for Dec. 5, 2003 IBIS Open Forum Meeting Agenda for December 5, 2003 Telephone Number Bridge Passcode 1-916-356-2663 4 685-5954 All meetings are 8:00 AM to 9:55 AM US Pacific Time. When calling into the meeting, provide the reservation number and passcode at the automated prompts. If asked by an operator, please request to join the IBIS Open Forum hosted by Michael Mirmak. For international numbers, please contact Michael Mirmak. 8:00 Check-In, Intros, Announcements Mirmak - Intros of New IBIS Participants, Meeting Quorum Mirmak - Call for Patents (IBIS 4.0, 4.1, ICM) Mirmak - Membership Update and Treasurers Report Mirmak - Review of Previous Meeting's Minutes (and ARs) Mirmak November 14, 2003 Open Forum Minutes - Miscellany/Announcements All - Press & Web Page Updates Huq, All - New Models Available, Library Update Leventhal - Opens for New Issues All 8:15 Administrative and Project Discussions Mailing List Administration Angulo/Ross International/External Progress - JEDEC Committee Report Green - FSA Modeling Committee Green - Other activities All Summit Planning - DesignCon 2004 Summit Planning Mirmak - European DATE Summit Planning Ross - Other events All IBIS Version 4.0 Parser Status Mirmak - Call for vote on parser funds IBIS Quality Committee Report Katz/Green IBIS Model Review Committee Green S2IBIS3 Status Varma/Ross ICM Specification and Parser Status Green/Mirmak - BIRD process discussion New Administrative Issues All 8:45 Technical Discussion BIRD83.2: Series Element Clarifications Mirmak, All - Call for Vote BIRD84.1: Driver Schedule Clarifications Muranyi, All - Call for Vote BIRD85.3: Slew Time Clarifications Angulo, All BIRD86: Clarification of Submodel Mode Green, All IBIS Version 4.1 Discussion All - Third Formal "Reading" IBISCHK4 Status Mirmak/Angulo New Technical Issues All 9:50 Wrap Up and Next Meeting Plans Mirmak - January 9, 2004 Open Forum 9:55 Sign Off |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 26 Dec 2003 13:04:15 -0800 From: Bob Ross Subject: [IBIS-Users] BIRD86.1 - Clarification of Subparameter Mode This is a multi-part message in MIME format. - --------------040107080601060506050006 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit To IBIS Committee: Based on a review of the original intention, BIRD86.1 proposes a different solution than originally issued in BIRD86. For reference, the BIRD86 proposal is archived as part ot the ANALYSIS ... section. BIRD86.1 is scheduled for discussion and vote at the January 9, 2004 IBIS meeting. Lynne Green and Bob Ross - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Consulting Group LLC 2926 SE Yamhill St. Device Modeling Division Portland, OR 97214 13610 SW Harness Lane 503-239-5536 Beaverton, OR 97008 http://www.teraspeed.com 503-430-1065 bob@teraspeed.com 503-246-8048 Direct - --------------040107080601060506050006 Content-Type: text/plain; name="BIRD86.1.txt" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="BIRD86.1.txt" **************************************************************************** **************************************************************************** BUFFER ISSUE RESOLUTION DOCUMENT (BIRD) BIRD ID#: 86.1 ISSUE TITLE: Clarification of Submodel Mode REQUESTOR: Lynne Green, Green Streak Programs, Bob Ross, Teraspeed DATE SUBMITTED: November 21, 2003 DATE REVISED: December 26, 2003 DATE ACCEPTED BY IBIS OPEN FORUM: Pending **************************************************************************** **************************************************************************** STATEMENT OF THE ISSUE: In IBIS 4.0, it is not clear if the statement "Set the submodel mode to All if the submodel is to be used for all modes of operation." is for just those buffer types mentioned in this paragraph, or for all buffer types. The IBIS parser does not check for inconsistencies. **************************************************************************** STATEMENT OF THE RESOLVED SPECIFICATIONS: Existing paragraphs for [Add Submodel]: | If the top-level model type is one of the I/O or 3-state | models, the submodel mode may be Driving, Non-Driving, or All. | For example, if the submodel mode is Non-Driving, then the | submodel is used only in the high-Z state of a 3-state model. | Set the submodel mode to All if the submodel is to be used for | all modes of operation. | | The submodel mode cannot conflict with the top-level model | type. For example, if the top-level model type is an Open or | Output type, the submodel mode cannot be set to Non-Driving. | Similarly, if the top-level model type is Input, the submodel | mode cannot be set to Driving. Add the paragraph: |* |* The submodel mode can be set to All to cover all permitted |* modes for any top-level model type including, for example, |* Input, Output, and I/O). |* **************************************************************************** ANALYSIS PATH/DATA THAT LED TO SPECIFICATION: BIRD86: People create models without noticing the restriction on the submodel mode. This is not caught by the IBIS 3.2 parser, so this is difficult to debug in a model. BIRD86.1 The BIRD86 proposal is captured below as one possible interpretation. Proposed text: | If the top-level model type is one of the I/O or 3-state | models, the submodel mode may be Driving, Non-Driving, | or All. | For example, if the submodel mode is Non-Driving, then | the submodel is used only in the high-Z state of a | 3-state model. | Set the submodel mode to All if the submodel is to be | used for |** both Driving and Non-Driving modes of operation. | | The submodel mode cannot conflict with the top-level | model type. For example, if the top-level model type | is an Open or Output type, the submodel mode cannot be | set to Non-Driving |** or All. Similarly, if the top-level model type is |** Input, the submodel mode cannot be set to Driving or All. | However, BIRD86.1 proposes the opposite interpretation that 'All' was intended to include all the permitted modes for any of the top-level models including those with only one mode. The parser already functions in this manner and would not be changed. **************************************************************************** ANY OTHER BACKGROUND INFORMATION: (Test Case for BIRD86 proposal) | test case for submodel mode | *************************************************** | [IBIS Ver] 3.2 [File Name] submodel1.ibs [File Rev] 0.0 [Date] 20 Nov 2003 [Source] Dummy model [Notes] Dummy data [Disclaimer] BIRD testing use only | [Component] Test1 [Manufacturer] Nobody | [Package] R_pkg 5.95E-02 5.36E-02 6.59E-02 L_pkg 4.21E-09 3.07E-09 5.91E-09 C_pkg 0.910E-12 0.758E-12 1.110E-12 | [Pin] signal_name model_name R_pin L_pin C_pin 1 A1 testA 10 GND GND 20 VCC POWER | | [Model] testA Model_type Input Vinl = 0.8000V Vinh = 2.0000V C_comp 3.67pF 3.24pF 4.23pF | [Add Submodel] |Submodel_name Mode testA1 All | [Temperature Range] 40.0000 100.0000 -25.0000 [Voltage Range] 3.3000V 3.0000V 3.6000V | [GND Clamp] | voltage I(typ) I(min) I(max) | -5.500E+00 -4.0 -4.5 -5.5 0.000E+00 0 0 0 5.500E+00 0 0 0 |*********************************************************************** | [Submodel] testA1 Submodel_type Dynamic_clamp | |Voltage typ min max |Voltage Range 3.3000V 3.0000V 3.6000V | [POWER Clamp] | voltage I(typ) I(min) I(max) | -5.500E+00 4.0 4.5 5.5 0.000E+00 0 0 0 5.500E+00 0 0 0 | [END] **************************************************************************** - --------------040107080601060506050006-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Mon, 29 Dec 2003 19:00:12 +0531 From: Ranjan Kumar Sahoo Subject: [IBIS-Users] IBIS Model for SSTL differential output buffer Hi all, I am trying to generate IBIS model for SSTL diiferential Output buffer. Input swing is 500 mv ( VDD-500mv to VDD) .Output swing is 0 to Vdd. s2ibis2 is used for IBIS file generation. The problem is output never falls below Vdd value in case of Falling wave form and always close to Vdd in case of rising wave form But when I do an Antrim Simulation (with R_fixture=50ohm connected to Vdd) the swing is proper. In case of differntial output buffer how the input stimulus is applied and how R_fixture is connected. The relevent input information and pin details are given below. Thanks & regards, Ranjan [temperature range] 27 140 0 [voltage range] 1.8 1.7 1.9 [sim time] 9ns [vil] 1.3 1.2 1.4 [vih] 1.8 1.7 1.9 [Tr] 1ns 0.9ns 1.10ns [Tf] 1ns 0.9ns 1.10ns [C_comp] 2pf 1.8pf 2.2pf [rload] 50 [Pin] 1 d_core_p d_core_p dummy_in 2 d_core_n d_core_n dummy_in 3 pad1 pad1 diff_output - -> 1 4 pad2 pad2 diff_output - -> 2 5 vgnd vgnd GND 6 vpwr vpwr POWER Non-inv_pin inv_pin vdiff tdelay_typ tdelay_min tdelay_max 1 2 250mv 0ns NA NA |Differential output pin is indicated by keyword Diff Pin | [Diff Pin] |Non-inv_pin inv_pin vdiff tdelay_typ tdelay_min tdelay_max 3 4 0v 0ns NA NA [Model] diff_output [Model type]Output [Polarity] Non-inverting [Model file] typ.mod typ.mod typ.mod [Rising waveform] 50 0 0 0 NA NA NA NA NA [Falling waveform] 50 1.8 1.7 1.9 NA NA NA NA NA |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: 29 Dec 2003 08:51:03 -0800 From: "Lynne D. Green" Subject: Re: [IBIS-Users] IBIS Model for SSTL differential output buffer Hello, Ranjan, A newer version, s2ibis3, is available on the IBIS web site. Best regards, Lynne Lynne Green Green Streak Programs On Mon, 2003-12-29 at 05:29, Ranjan Kumar Sahoo wrote: > Hi all, > I am trying to generate IBIS model for SSTL diiferential Output buffer. > Input swing is 500 mv ( VDD-500mv to VDD) .Output swing is 0 to Vdd. > s2ibis2 is used for IBIS file generation. The problem is output never > falls below > Vdd value in case of Falling wave form and always close to Vdd in case > of rising wave form > But when I do an Antrim Simulation (with R_fixture=50ohm connected to > Vdd) the swing is > proper. > In case of differntial output buffer how the input stimulus is applied > and how R_fixture is connected. The relevent input information and pin > details > are given below. > > Thanks & regards, > Ranjan > > > > [temperature range] 27 140 0 > [voltage range] 1.8 1.7 1.9 > [sim time] 9ns > [vil] 1.3 1.2 1.4 > [vih] 1.8 1.7 1.9 > [Tr] 1ns 0.9ns 1.10ns > [Tf] 1ns 0.9ns 1.10ns > [C_comp] 2pf 1.8pf 2.2pf > [rload] 50 > > > [Pin] > 1 d_core_p d_core_p dummy_in > 2 d_core_n d_core_n dummy_in > 3 pad1 pad1 diff_output > -> 1 > 4 pad2 pad2 diff_output > -> 2 > 5 vgnd vgnd GND > 6 vpwr vpwr POWER > > > > Non-inv_pin inv_pin vdiff tdelay_typ tdelay_min tdelay_max > > 1 2 250mv 0ns NA NA > > > |Differential output pin is indicated by keyword Diff Pin > | > > [Diff Pin] > |Non-inv_pin inv_pin vdiff tdelay_typ tdelay_min tdelay_max > > 3 4 0v 0ns NA NA > > [Model] diff_output > [Model type]Output > [Polarity] Non-inverting > [Model file] typ.mod typ.mod typ.mod > [Rising waveform] 50 0 0 0 NA NA NA NA NA > [Falling waveform] 50 1.8 1.7 1.9 NA NA NA NA NA > > > |------------------------------------------------------------------ > |For help or to subscribe/unsubscribe, email majordomo@eda.org > |with just the appropriate command message(s) in the body: > | > | help > | subscribe ibis > | subscribe ibis-users > | unsubscribe ibis > | unsubscribe ibis-users > | > |or email a written request to ibis-request@eda.org. > | > |IBIS reflector archives exist under: > | > | http://www.eda.org/pub/ibis/email_archive/ Recent > | http://www.eda.org/pub/ibis/users_archive/ Recent > | http://www.eda.org/pub/ibis/email/ E-mail since 1993 - -- Lynne D. Green |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: 29 Dec 2003 09:32:46 -0800 From: Syed Huq Subject: Re: [IBIS-Users] IBIS Model for SSTL differential output buffer Rajan, s2ibis2 was written for IBISv2.1 which does not handle diff Inputs/Outputs very well. In this version of the spec, the Diff Output is treated as Single-ended Outputs. There are many ways to fix/debug this. Your s2ibis2 runs will generate various .spi files. For Rising/Falling waveforms, these may be called axx.spi, bxx.spi, cxx.spi or Xxx.spi, Yxx.spi and Zxx.spi. Open these and see if the Diff Input stimulas is applied properly. If not, edit the file manually. Delete the .out files for the Rising/Falling simulations and re-run with your newly edited .spi files. You could try the s2ibis3 and see if you get better results. Regards, Syed On Mon, 2003-12-29 at 05:29, Ranjan Kumar Sahoo wrote: > Hi all, > I am trying to generate IBIS model for SSTL diiferential Output buffer. > Input swing is 500 mv ( VDD-500mv to VDD) .Output swing is 0 to Vdd. > s2ibis2 is used for IBIS file generation. The problem is output never > falls below > Vdd value in case of Falling wave form and always close to Vdd in case > of rising wave form > But when I do an Antrim Simulation (with R_fixture=50ohm connected to > Vdd) the swing is > proper. > In case of differntial output buffer how the input stimulus is applied > and how R_fixture is connected. The relevent input information and pin > details > are given below. > > Thanks & regards, > Ranjan > > > > [temperature range] 27 140 0 > [voltage range] 1.8 1.7 1.9 > [sim time] 9ns > [vil] 1.3 1.2 1.4 > [vih] 1.8 1.7 1.9 > [Tr] 1ns 0.9ns 1.10ns > [Tf] 1ns 0.9ns 1.10ns > [C_comp] 2pf 1.8pf 2.2pf > [rload] 50 > > > [Pin] > 1 d_core_p d_core_p dummy_in > 2 d_core_n d_core_n dummy_in > 3 pad1 pad1 diff_output > -> 1 > 4 pad2 pad2 diff_output > -> 2 > 5 vgnd vgnd GND > 6 vpwr vpwr POWER > > > > Non-inv_pin inv_pin vdiff tdelay_typ tdelay_min tdelay_max > > 1 2 250mv 0ns NA NA > > > |Differential output pin is indicated by keyword Diff Pin > | > > [Diff Pin] > |Non-inv_pin inv_pin vdiff tdelay_typ tdelay_min tdelay_max > > 3 4 0v 0ns NA NA > > [Model] diff_output > [Model type]Output > [Polarity] Non-inverting > [Model file] typ.mod typ.mod typ.mod > [Rising waveform] 50 0 0 0 NA NA NA NA NA > [Falling waveform] 50 1.8 1.7 1.9 NA NA NA NA NA > > > |------------------------------------------------------------------ > |For help or to subscribe/unsubscribe, email majordomo@eda.org > |with just the appropriate command message(s) in the body: > | > | help > | subscribe ibis > | subscribe ibis-users > | unsubscribe ibis > | unsubscribe ibis-users > | > |or email a written request to ibis-request@eda.org. > | > |IBIS reflector archives exist under: > | > | http://www.eda.org/pub/ibis/email_archive/ Recent > | http://www.eda.org/pub/ibis/users_archive/ Recent > | http://www.eda.org/pub/ibis/email/ E-mail since 1993 |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 1 Jan 2004 20:36:06 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] Agenda, IBIS Open Teleconference for January 9, 2004 IBIS Open Forum Meeting Agenda for January 9, 2004 Telephone Number Bridge Passcode 1-916-356-2663 3 008-4977 All meetings are 8:00 AM to 9:55 AM US Pacific Time. When calling into the meeting, provide the reservation number and passcode at the automated prompts. If asked by an operator, please request to join the IBIS Open Forum hosted by Michael Mirmak. For international numbers, please contact Michael Mirmak. 8:00 Check-In, Intros, Announcements Mirmak - Intros of New IBIS Participants, Meeting Quorum Mirmak - Call for Patents (IBIS 4.0, 4.1, ICM) Mirmak - Membership Update and Treasurers Report Mirmak - Review of Previous Meeting's Minutes (and ARs) Mirmak December 5, 2003 Open Forum Minutes - Miscellany/Announcements All - Press & Web Page Updates Huq, All - New Models Available, Library Update Leventhal - Opens for New Issues All 8:15 Administrative and Project Discussions Mailing List Administration Angulo/Ross International/External Progress - JEDEC Committee Report Green - FSA Modeling Committee Green - Other activities All Summit Planning - DesignCon 2004 Summit Planning Mirmak - European DATE Summit Planning Ross - Other events All IBIS Version 4.0 Parser Update Mirmak IBIS Quality Committee Report Katz/Green IBIS Model Review Committee Green S2IBIS3 Status Varma/Ross ICM Specification and Parser Status Green/Mirmak - BIRD process discussion New Administrative Issues All 8:45 Technical Discussion BIRD85.3: Slew Time Clarifications Angulo, All - Call for Vote BIRD86.1: Clarification of Submodel Mode Green, All - Call for Vote IBIS Version 4.1 Discussion All - Fourth Formal "Reading" - Scheduling of Approval Vote IBISCHK4 BUG Status Mirmak/Angulo New Technical Issues All 9:50 Wrap Up and Next Meeting Plans Mirmak - January 30, 2004 Open Forum 9:55 Sign Off |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Mon, 5 Jan 2004 11:14:45 +0530 From: Subject: [IBIS-Users] Query on the IBIS file verification This is a multi-part message in MIME format. - ------_=_NextPart_001_01C3D34F.061B2535 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Experts, I have found some interesting behavior of IBIS models during verification using HSPICE simulator. I would like to get your comments on the following : 1. I have generated an IBIS model for a 3-state Output buffer. When I disable the output buffer IBIS model and give a sweep voltage from - -ref_voltage to 2*(ref_voltage) on the output pin (just as is done to generate the IV tables for IBIS model), I get very small currents in order of uA even on beyond rail voltage values. Now at above the rail voltages, I would expect some good amount of current as clamp diodes would be turned on. The clamp tables in the IBIS model do have currents in Amperes at above rail voltages. But when I enable the buffer and then apply a sweeping voltage on the output pin I get expected current values. Any comments on why I am not able to get clamp table value currents when the buffer is disabled ?=0D 2. In one of the I/O buffer IBIS model transient analysis, the ouput waveform does not match the model's V-T table. I am using the same setup (same Rload with same termination and same input signal used to generate the IBIS model) for the analysis. I am not able to figure out the mismatch. When I run ibischk3 on the IBIS model I am getting the following warnings which I am not able to eleminate : a. The [Rising Waveform] with [R_fixture]=3D50 Ohms and [V_fixture_max]=3D1.6V has MAX column DC endpoints of 0.76V and 1.59V,but an equivalent load applied to the model's I-V tables yields different voltages(0.76V and 1.57V), a difference of 0.21% and 2.22%,respectively. b. The [Falling Waveform] with [R_fixture]=3D50 Ohms and [V_fixture_max]=3D1.6V has MAX column DC endpoints of 0.76V and 1.59V,but an equivalent load applied to the model's I-V tables yields different voltages(0.76V and 1.57V), a difference of 0.21% and 2.22%,respectively. If anybody has faced the same problem or has some solution for the above issues please guide me in this regards, Radhika V Guttal Confidentiality Notice=0D The information contained in this electronic message and any attachments to= this message are intended for the exclusive use of the addressee(s) and may contain confidential or= privileged information. If you are not the intended recipient, please notify the sender at Wipro or= Mailadmin@wipro.com immediately and destroy all copies of this message and any attachments. - ------_=_NextPart_001_01C3D34F.061B2535 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Hi Experts,

I have found some interesting behavior of IBIS models during= verification=0D using HSPICE simulator. I would like to get your comments on the following= :

1. I have generated an IBIS model for a 3-state Output buffer. When I= disable=0D the output buffer IBIS model and give a sweep voltage from -ref_voltage to= =0D 2*(ref_voltage) on the output pin (just as is done to generate the IV= tables for=0D IBIS model), I get very small currents in order of uA even on beyond rail=0D voltage values. Now at above the rail voltages, I would expect some good= amount=0D of current as clamp diodes would be turned on. The clamp tables in the IBIS= =0D model do have currents in Amperes at above rail voltages. But when I enable= the=0D buffer and then apply a sweeping voltage on the output pin I get expected=0D current values. Any comments on why I am not able to get clamp table value= =0D currents when the buffer is disabled ?

2. In one of the I/O buffer IBIS model transient analysis, the ouput= waveform=0D does not match the model's V-T table. I am using the same setup (same Rload= with=0D same termination and same input signal used to generate the IBIS model) for= the=0D analysis. I am not able to figure out the mismatch. When I run ibischk3 on= the=0D IBIS model I am getting the following warnings which I am not able to= eleminate=0D :

a. The [Rising Waveform] with [R_fixture]=3D50 Ohms and [V_fixture_max]= =3D1.6V=0D has MAX column DC endpoints of 0.76V and 1.59V,but an equivalent load= applied to=0D the model's I-V tables yields different voltages(0.76V and 1.57V), a= difference=0D of 0.21% and 2.22%,respectively.

b. The [Falling Waveform] with [R_fixture]=3D50 Ohms and [V_fixture_max]= =3D1.6V=0D has MAX column DC endpoints of 0.76V and 1.59V,but an equivalent load= applied to=0D the model's I-V tables yields different voltages(0.76V and 1.57V), a= difference=0D of 0.21% and 2.22%,respectively.

If anybody has faced the same problem or has some solution for the above= =0D issues please guide me in this regards,

Radhika V Guttal

Confidentiality=
 Notice=0D

The information contained in this electronic message and any attachments to=
 this message are intended
for the exclusive use of the addressee(s) and may contain confidential or=
 privileged information. If
you are not the intended recipient, please notify the sender at Wipro or=
 Mailadmin@wipro.com immediately
and destroy all copies of this message and any attachments.
- ------_=_NextPart_001_01C3D34F.061B2535-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Mon, 5 Jan 2004 11:06:31 -0500 From: "Ingraham, Andrew" Subject: Re: [IBIS-Users] Query on the IBIS file verification This is a multi-part message in MIME format. - ------=_NextPart_000_01DD_01C3D37B.F9451C40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message1. I have generated an IBIS model for a 3-state Output buffer. = When I disable the output buffer IBIS model and give a sweep voltage = from -ref_voltage to 2*(ref_voltage) on the output pin (just as is done = to generate the IV tables for IBIS model), I get very small currents in = order of uA even on beyond rail voltage values. ... If you are going a volt beyond the rails and seeing no significant = current, it may be an HSPICE "feature". Some of the B-element nodes are = listed as "optional." Do not omit the optional nodes! If you omit them, HSPICE behaves exactly like you described (the clamps = turn on and off with the pull-up/down devices). 2. In one of the I/O buffer IBIS model transient analysis, the ouput = waveform does not match the model's V-T table. I am using the same setup = (same Rload with same termination and same input signal used to generate = the IBIS model) for the analysis. I am not able to figure out the = mismatch.=20 Make sure to add something to represent the IC package (R_pkg or R_pin). = The HSPICE IBIS implementation doesn't include any IBIS package = parasitics. When I run ibischk3 on the IBIS model I am getting the following = warnings which I am not able to eleminate : a. The [Rising Waveform] with [R_fixture]=3D50 Ohms and = [V_fixture_max]=3D1.6V has MAX column DC endpoints of 0.76V and = 1.59V,but an equivalent load applied to the model's I-V tables yields = different voltages(0.76V and 1.57V), a difference of 0.21% and = 2.22%,respectively.=20 b. The [Falling Waveform] with [R_fixture]=3D50 Ohms and = [V_fixture_max]=3D1.6V has MAX column DC endpoints of 0.76V and = 1.59V,but an equivalent load applied to the model's I-V tables yields = different voltages(0.76V and 1.57V), a difference of 0.21% and = 2.22%,respectively. These differences are not huge, you're almost there. Check that the = SPICE simulation actually uses 50.0 ohms to 1.60V, the same exact supply = voltage, and that the package resistance is correct and in the = simulation. Regards, Andy - ------=_NextPart_000_01DD_01C3D37B.F9451C40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message

1. I have generated an IBIS model for a 3-state Output buffer. When I = disable=20 the output buffer IBIS model and give a sweep voltage from -ref_voltage = to=20 2*(ref_voltage) on the output pin (just as is done to generate the IV = tables for=20 IBIS model), I get very small currents in order of uA even on beyond = rail=20 voltage values. ...

If you are going a volt beyond = the rails=20 and seeing no significant current, it may be an HSPICE "feature".  = Some of=20 the B-element nodes are listed as "optional."  Do not omit the = optional=20 nodes!

If you omit them, HSPICE behaves = exactly like=20 you described (the clamps turn on and off with the pull-up/down=20 devices).
 
2. In one of the I/O buffer IBIS model transient = analysis, the=20 ouput waveform does not match the model's V-T table. I am using the same = setup=20 (same Rload with same termination and same input signal used to generate = the=20 IBIS model) for the analysis. I am not able to figure out the mismatch.=20
 
Make sure to add something to = represent the IC=20 package (R_pkg or R_pin).  The HSPICE IBIS implementation = doesn't=20 include any IBIS package parasitics.
 
When I run ibischk3 on the IBIS model I am getting = the=20 following warnings which I am not able to eleminate :

a. The [Rising Waveform] with [R_fixture]=3D50 Ohms and = [V_fixture_max]=3D1.6V=20 has MAX column DC endpoints of 0.76V and 1.59V,but an equivalent load = applied to=20 the model's I-V tables yields different voltages(0.76V and 1.57V), a = difference=20 of 0.21% and 2.22%,respectively.

b. The [Falling Waveform] with [R_fixture]=3D50 Ohms and = [V_fixture_max]=3D1.6V=20 has MAX column DC endpoints of 0.76V and 1.59V,but an equivalent load = applied to=20 the model's I-V tables yields different voltages(0.76V and 1.57V), a = difference=20 of 0.21% and 2.22%,respectively.

 

These differences are not huge, you're almost=20 there.  Check that the SPICE simulation actually uses 50.0 ohms to = 1.60V,=20 the same exact supply voltage, and that the package resistance is = correct and in=20 the simulation.

 

Regards,

Andy

 

- ------=_NextPart_000_01DD_01C3D37B.F9451C40-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Wed, 7 Jan 2004 11:57:42 -0800 (PST) From: Michael Sachtjen Subject: Re: [IBIS-Users] Query on the IBIS file verification Typically when I seen these warnings it is either becuase I did not run the V-T simulations long enough for the transition to complete or I didn't capture enough I-V points in the transition regions. Since the larger error on both your rising and falling tables occur on the VDD side, I would suspect the later. Are your I-V points equally spaced or are you choosing the "best 100" to represent the curve? - --- radhika.guttal@wipro.com wrote: > 2. In one of the I/O buffer IBIS model transient > analysis, the ouput > waveform does not match the model's V-T table. I am > using the same setup > (same Rload with same termination and same input > signal used to generate > the IBIS model) for the analysis. I am not able to > figure out the > mismatch. When I run ibischk3 on the IBIS model I am > getting the > following warnings which I am not able to eleminate > : > > a. The [Rising Waveform] with [R_fixture]=50 Ohms > and > [V_fixture_max]=1.6V has MAX column DC endpoints of > 0.76V and 1.59V,but > an equivalent load applied to the model's I-V tables > yields different > voltages(0.76V and 1.57V), a difference of 0.21% and > 2.22%,respectively. > > > b. The [Falling Waveform] with [R_fixture]=50 Ohms > and > [V_fixture_max]=1.6V has MAX column DC endpoints of > 0.76V and 1.59V,but > an equivalent load applied to the model's I-V tables > yields different > voltages(0.76V and 1.57V), a difference of 0.21% and > 2.22%,respectively. > > If anybody has faced the same problem or has some > solution for the above > issues please guide me in this regards, > > Radhika V Guttal __________________________________ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 08 Jan 2004 09:09:07 -0500 From: Robert Haller Subject: Re: [IBIS-Users] Query on the IBIS file verification Radhika and Michael There are also ibis parser bugs that can trigger this error i.e.parser BUG81 regards Bob - -- Robert J. Haller (rhaller@sisoft.com) Principal Consultant Signal Integrity Software Inc. 6 Clock Tower Place, Suite 250 Maynard, MA 01754 Phone: (978) 461-0449, ext 15 Michael Sachtjen wrote: > Typically when I seen these warnings it is either > becuase I did not run the V-T simulations long enough > for the transition to complete or I didn't capture > enough I-V points in the transition regions. Since > the larger error on both your rising and falling > tables occur on the VDD side, I would suspect the > later. Are your I-V points equally spaced or are you > choosing the "best 100" to represent the curve? > > > --- radhika.guttal@wipro.com wrote: > >>2. In one of the I/O buffer IBIS model transient >>analysis, the ouput >>waveform does not match the model's V-T table. I am >>using the same setup >>(same Rload with same termination and same input >>signal used to generate >>the IBIS model) for the analysis. I am not able to >>figure out the >>mismatch. When I run ibischk3 on the IBIS model I am >>getting the >>following warnings which I am not able to eleminate >>: >> >>a. The [Rising Waveform] with [R_fixture]=50 Ohms >>and >>[V_fixture_max]=1.6V has MAX column DC endpoints of >>0.76V and 1.59V,but >>an equivalent load applied to the model's I-V tables >>yields different >>voltages(0.76V and 1.57V), a difference of 0.21% and >>2.22%,respectively. >> >> >>b. The [Falling Waveform] with [R_fixture]=50 Ohms >>and >>[V_fixture_max]=1.6V has MAX column DC endpoints of >>0.76V and 1.59V,but >>an equivalent load applied to the model's I-V tables >>yields different >>voltages(0.76V and 1.57V), a difference of 0.21% and >>2.22%,respectively. >> >>If anybody has faced the same problem or has some >>solution for the above >>issues please guide me in this regards, >> >>Radhika V Guttal > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes > http://hotjobs.sweepstakes.yahoo.com/signingbonus > |------------------------------------------------------------------ > |For help or to subscribe/unsubscribe, email majordomo@eda.org > |with just the appropriate command message(s) in the body: > | > | help > | subscribe ibis > | subscribe ibis-users > | unsubscribe ibis > | unsubscribe ibis-users > | > |or email a written request to ibis-request@eda.org. > | > |IBIS reflector archives exist under: > | > | http://www.eda.org/pub/ibis/email_archive/ Recent > | http://www.eda.org/pub/ibis/users_archive/ Recent > | http://www.eda.org/pub/ibis/email/ E-mail since 1993 |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 9 Jan 2004 17:11:41 +0100 From: Ralf Bruening Subject: [IBIS-Users] E U R O P E A N I B I S S U M M I T M E E T I N G 2004 - Third Announcement & Call for Participation+Presentations To All: We have been holding successful European IBIS Summit Meetings for the past six years. This year we are again holding a meeting along with DATe 04 on Friday, February 20, 2004. The purpose is to promote communication among users and developers of IBIS models in Europe. The meeting is free and open to everyone. However, you will have to register for the exhibition at DATe (to get access to the meeting room). Refreshments are planned. Below is some information on the IBIS Summit and some related events. You are invited to register and also to submit presentation proposals. So far we are expecting between 5-8 presentations from IBIS quality aspects over IBIS and IC emissions upto High-Speed Design and EMI related issues in using IBIS. Ralf Bruening Product Manager High Speed Design ZUKEN EMC Technology Center - ----------------------------------------------------------------------------------- E U R O P E A N I B I S S U M M I T M E E T I N G T H I R D A N N O U N C E M E N T Time/Date: 9:00 AM - 2:00 PM, Friday, February 20, 2003 Location: Meeting room @ CNIT, La Defense (International Congress Center) Paris, France (where DATE 2004 is being held) (Free DATE 2004 exhibition registration for room entry, see URL below) Content: Presentations and Discussions Purpose: Solicit and Exchange IBIS Model Related Information and Ideas Sponsors: Zuken, Mentor Graphics, Cadence Design Systems. If your company would be interested in sponsoring this event, please contact Lynne Green or Ralf Bruening . Benefits to sponsors include formal recognition at the meeting and mention in the Calls for Papers and meeting minutes. Your financial support strengthens the organization by allowing IBIS to focus resources on industry activities rather than raising money, and you will receive generous thanks for your support. DATE 2004 Conference: February 16-20, 2004. The IBIS meeting is scheduled the day after the DATE 2004 exhibition ends. Location: CNIT Congress Center, Paris, France DATE URL: http://www.date-conference.com Background: DATE (Design, Automation, and Test in Europe) is the only European event dedicated to electronic system design and test. Topics of current interest to the EIA IBIS Open Forum are addressed at DATE. This meeting will be conducted as a formal IBIS Summit Meeting. Presentations are expected to be available and archived in an electronic format, and minutes of the meeting will be issued. Any pending formal decisions (votes) will be announced at least two weeks prior to the meeting. Topics and presentations may include (list is open for further contributions): - Submitted Presentations on IBIS Topics (See below) - Information about the most recent IBIS Developments - Less formal Ad Hoc Presentations and Discussions - IBIS and Modelling Questions and Answers The meeting is free and open to everyone. However, you will have to register for the exhibition at DATe (to get access to the meeting room). Refreshments are planned. Below is some information on the IBIS Summit and some related events. You are invited to register and also to submit presentation proposals. CALL FOR PARTICIPANTS People involved in IBIS Model development, EDA tool development, and digital circuit design are invited to participate in the European IBIS Summit meeting. If you plan to participate, please register with the information below (deadline, Febrary 13th, 2003): Name: E-mail address: Company: Telephone: Send to: Ralf Bruening (ralf.bruening@zuken.de) CALL FOR PRESENTATIONS We are seeking presentations from individuals who have IBIS experiences or issues. Some suggested subjects of interest are: - IBIS Model Development Experiences - Company IBIS Standards and Requirements - Generating and Validating IBIS Models - Future IBIS Requirements - EMC/EMI IBIS Issues - Experiences using IBIS in the PCB Design process Format of Presentation: LCD or Overhead Projections Time: 15-30 Minutes Electronic Archival: We request electronic versions so that the presentations can be archived and also made available to non-attendees. Formats used in the past have been text, Power Point, Word, Postscript, and Acrobat PDF. Electronic presentations should be made available by February the 13th, 2003. Otherwise the presentor will be expected to provide 30 copies for distribution. If you plan a presentation, please supply Title: Presenter: E-mail address: Company: Telephone: Estimate Time: Send this to both: Ralf Bruening (ralf.bruening@zuken.de) AGENDA The agenda includes presentations, discussions, breaks, and a luncheon (which will be provided). This will be developed as presentation proposals are received. LIST OF NEARBY HOTELS See for travel directions, hotels and other information. Looking forward to meeting you at DATe 2004 in Paris Ralf Bruening - ------------------------------------------------------------- Ralf Bruening - Product Manager - ZUKEN EMC Technology Center High Speed Solution Business - Vattmannstr.3 -33100 Paderborn Phone: +49 5251 150 600 (direct: 621) - FAX: +49 5251 150 700 Mobile: +49 170 4228512 - Alternative Mobile: +49 172 9070675 Email: ralf.bruening@zuken.de - WWW: http://www.zuken.com - ------------------------------------------------------------- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Fri, 9 Jan 2004 13:16:25 -0600 From: "Fisher, Thomas" Subject: [IBIS-Users] ECL Termination Voltage Question This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. - ------_=_NextPart_001_01C3D6E5.13179058 Content-Type: text/plain All, I have a PECL driver that I am modeling that has a non-standard load (pi network to ground) which results in a larger Vod. (1.2-V vs. 800mV) What happens during simulation is the single-ended waveform depicts a slowness of the rising edge which results in a plateau effect on the rise/fall of the differential waveform. (It looks great when simulating in TISpice) Most (P)ECL termination is going to be 50 ohms to Vtt for both non-inverting and inverting outputs whereas Vtt = Vcc - 2-V. Under the load I am simulating we are using 200 ohms to ground. (customers' request) Having said that, looking in the 3.2 spec on page 78 under ramp rates model_type for output_ECL it mentions 50 ohm resistor to the termination voltage (Vterm = Vcc - 2-V). Is this Vterm embedded into the specification? Is there a way to specify that the load is 200 ohms to ground? I believe this might be causing the abnormality. Any help/insight would be appreciated. Thanks in advance. Regards, Tom Fisher - ------_=_NextPart_001_01C3D6E5.13179058 Content-Type: text/html

All,

I have a PECL driver that I am modeling that has a non-standard load (pi network to ground) which results in a larger Vod.  (1.2-V vs. 800mV)  What happens during simulation is the single-ended waveform depicts a slowness of the rising edge which results in a plateau effect on the rise/fall of the differential waveform.  (It looks great when simulating in TISpice)  Most (P)ECL termination is going to be 50 ohms to Vtt for both non-inverting and inverting outputs whereas Vtt = Vcc – 2-V.  Under the load I am simulating we are using 200 ohms to ground.  (customers’ request)

 

Having said that, looking in the 3.2 spec on page 78 under ramp rates model_type for output_ECL it mentions 50 ohm resistor to the termination voltage (Vterm = Vcc – 2-V).   Is this Vterm embedded into the specification?  Is there a way to specify that the load is 200 ohms to ground?  I believe this might be causing the abnormality.  Any help/insight would be appreciated.  Thanks in advance.

 

Regards,

Tom Fisher

 

- ------_=_NextPart_001_01C3D6E5.13179058-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Tue, 13 Jan 2004 08:56:04 -0800 From: Bob Ross Subject: [IBIS-Users] Re: [IBIS] ECL Termination Voltage Question Tom: My responses are in your text. Bob Fisher, Thomas wrote: > All, > > I have a PECL driver that I am modeling that has a non-standard load (pi > network to ground) which results in a larger Vod. (1.2-V vs. 800mV) > What happens during simulation is the single-ended waveform depicts a > slowness of the rising edge which results in a plateau effect on the > rise/fall of the differential waveform. (It looks great when simulating > in TISpice) Most (P)ECL termination is going to be 50 ohms to Vtt for > both non-inverting and inverting outputs whereas Vtt = Vcc – 2-V. Under > the load I am simulating we are using 200 ohms to ground. (customers’ > request) > > > > Having said that, looking in the 3.2 spec on page 78 under ramp rates > model_type for output_ECL it mentions 50 ohm resistor to the termination > voltage (Vterm = Vcc – 2-V). Is this Vterm embedded into the > specification? Yes Is there a way to specify that the load is 200 ohms to > ground? Yes, but you must use the [Rising Waveform] and [Falling Waveform] method and describe the waveform. This will override the [Ramp] keyword, which cannot correctly specify the situation you describe. I believe this might be causing the abnormality. Any > help/insight would be appreciated. Thanks in advance. > > > > Regards, > > Tom Fisher > > > - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Consulting Group LLC 2926 SE Yamhill St. Device Modeling Division Portland, OR 97214 13610 SW Harness Lane 503-239-5536 Beaverton, OR 97008 http://www.teraspeed.com 503-430-1065 bob@teraspeed.com 503-246-8048 Direct |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Tue, 13 Jan 2004 22:40:09 -0800 From: "Mirmak, Michael" Subject: [IBIS-Users] Approval Draft of IBIS Version 4.1 Available The IBIS Open Forum would like to announce that the final draft for version 4.1 of the IBIS specification is now available. This draft contains numerous technical enhancements, including support for VHDL-AMS and Verilog-AMS models. The current draft also includes the text of BIRD85.3 and BIRD86.1 as approved at the January 9, 2004 IBIS Open Forum teleconference. The draft text, in a variety of formats, can be found at: http://www.eda.org/pub/ibis/ver4.1_wip/ The draft will be submitted for a formal approval vote during the January 30, 2004 IBIS Open Forum teleconference. During this review period, comments and questions are welcome. Please send any feedback to me, to any member of the IBIS Open Forum board, or to the IBIS reflectors. Thank you for your support. - - Michael Mirmak Intel Corp. Chair, EIA/IBIS Open Forum |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 15 Jan 2004 09:19:39 -0600 From: "Fisher, Thomas" Subject: [IBIS-Users] Test - Please Ignore This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. - ------_=_NextPart_001_01C3DB7A.FE49ED2B Content-Type: text/plain this is just a test - please ignore :-) - ------_=_NextPart_001_01C3DB7A.FE49ED2B Content-Type: text/html

this is just a test - - please ignore J

 

 

- ------_=_NextPart_001_01C3DB7A.FE49ED2B-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Thu, 15 Jan 2004 10:16:08 -0600 From: "Fisher, Thomas" Subject: [IBIS-Users] ECL Termination Voltage Question This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. - ------_=_NextPart_001_01C3DB82.E2266F7E Content-Type: text/plain Bob, thanks for the response. Do I understand you correctly in that the Vtt is pre-set (base on Vcc) within the model type, 'output_ECL?' If this is the case, then it creates a problem for this particular model. Secondly, I am using the [Rising Waveform] and [Falling Waveform] but it does not correct this problem. The VT tables are created from Spice with 200 ohm resistors to ground. If 'output_ECL' is wanting to use the pre-set Vtt = Vcc - 2V with 50 ohm resistors, this is a problem. Who could I contact that could explain how the 'output_ECL' model type is constructed? Thanks. -T- Regards, Thomas Fisher Senior Systems Engineer Texas Instruments, Inc. Business: 214 480-3736 P.O. Box 660199 MS8710 Fax: 214 480-3160 Dallas, TX 75266-0199 tomfisher@ti.com Tom: My responses are in your text. Bob Fisher, Thomas wrote: > All, > > I have a PECL driver that I am modeling that has a non-standard load (pi > network to ground) which results in a larger Vod. (1.2-V vs. 800mV) > What happens during simulation is the single-ended waveform depicts a > slowness of the rising edge which results in a plateau effect on the > rise/fall of the differential waveform. (It looks great when simulating > in TISpice) Most (P)ECL termination is going to be 50 ohms to Vtt for > both non-inverting and inverting outputs whereas Vtt = Vcc - 2-V. Under > the load I am simulating we are using 200 ohms to ground. (customers' > request) > > > > Having said that, looking in the 3.2 spec on page 78 under ramp rates > model_type for output_ECL it mentions 50 ohm resistor to the termination > voltage (Vterm = Vcc - 2-V). Is this Vterm embedded into the > specification? Yes Is there a way to specify that the load is 200 ohms to > ground? Yes, but you must use the [Rising Waveform] and [Falling Waveform] method and describe the waveform. This will override the [Ramp] keyword, which cannot correctly specify the situation you describe. I believe this might be causing the abnormality. Any > help/insight would be appreciated. Thanks in advance. > > > > Regards, > > Tom Fisher > > > - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Consulting Group LLC 2926 SE Yamhill St. Device Modeling Division Portland, OR 97214 13610 SW Harness Lane 503-239-5536 Beaverton, OR 97008 http://www.teraspeed.com 503-430-1065 bob@teraspeed.com 503-246-8048 Direct - ----------------------------------------------------------------- |For help or to subscribe/unsubscribe, email majordomo@eda.org |with the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 - ------_=_NextPart_001_01C3DB82.E2266F7E Content-Type: text/html

Bob, thanks for the response.  Do I understand you correctly in that the Vtt is pre-set (base on Vcc) within the model type, ‘output_ECL?’  If this is the case, then it creates a problem for this particular model.

 

Secondly, I am using the [Rising Waveform] and [Falling Waveform] but it does not correct this problem.  The VT tables are created from Spice with 200 ohm resistors to ground.  If ‘output_ECL’ is wanting to use the pre-set Vtt = Vcc - 2V with 50 ohm resistors, this is a problem.

 

Who could I contact that could explain how the ‘output_ECL’ model type is constructed?  Thanks.  –T-

 

 

 

Regards,

Thomas Fisher

Senior Systems Engineer

Texas Instruments, Inc.         Business:    214 480-3736

P.O. Box 660199 MS8710     Fax:            214 480-3160

Dallas, TX 75266-0199           tomfisher@ti.com

 

 

Tom:

My responses are in your text.

Bob

Fisher, Thomas wrote:

> All,
>
> I have a PECL driver that I am modeling that has a non-standard load (pi
> network to ground) which results in a larger Vod. (1.2-V vs. 800mV)
> What happens during simulation is the single-ended waveform depicts a
> slowness of the rising edge which results in a plateau effect on the
> rise/fall of the differential waveform. (It looks great when simulating
> in TISpice) Most (P)ECL termination is going to be 50 ohms to Vtt for
> both non-inverting and inverting outputs whereas Vtt = Vcc – 2-V. Under
> the load I am simulating we are using 200 ohms to ground. (customers’
> request)
>
>
>
> Having said that, looking in the 3.2 spec on page 78 under ramp rates
> model_type for output_ECL it mentions 50 ohm resistor to the termination
> voltage (Vterm = Vcc – 2-V). Is this Vterm embedded into the
> specification?

Yes

Is there a way to specify that the load is 200 ohms to
> ground?

Yes, but you must use the [Rising Waveform] and [Falling Waveform]
method and describe the waveform. This will override the [Ramp]
keyword, which cannot correctly specify the situation you describe.

I believe this might be causing the abnormality. Any
> help/insight would be appreciated. Thanks in advance.
>
>
>
> Regards,
>
> Tom Fisher
>
>
> 

-- 
Bob Ross
Teraspeed Consulting Group LLC     Teraspeed Consulting Group LLC
2926 SE Yamhill St.                Device Modeling Division
Portland, OR 97214                 13610 SW Harness Lane
503-239-5536                       Beaverton, OR 97008
http://www.teraspeed.com           503-430-1065
bob@teraspeed.com                  503-246-8048 Direct

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