DATE: 10/28/03 SUBJECT: OCTOBER 24, 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 November 14, 2003 1-916-356-2663 1 477-8778 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 specifications. No patents were declared. MEMBERSHIP UPDATE AND TREASURER'S REPORT Michael Mirmak announced that, as of October 9, membership payment from Sun Microsystems was accepted, bringing the Open Forum officially to 28 members. The GEIA has provided a financial report through the end of October showing positive revenue versus expenses for the year so far (approximately $300). Bob Ross pointed out that GEIA's fiscal year is not the same as the federal government, but corresponds to the calendar year. As a result, the budget must cover expenses in November and December. Bob noted that the Open Forum should consider itself exactly on budget for the year and that this was a positive development. Michael mentioned that any budgeting for the end of 2003 needs to take into account reimbursement to NESA for the PCB East summit lunch and final payment to Atul Agarwal for his IBISCHK4.0 parser work. REVIEW OF MINUTES AND ARS The October 3, 2003 meeting minutes were approved with one change: Bob Ross noted that the previous minutes incorrectly noted that the minutes from the "October 3" meeting and not the "September 12" meeting were approved. This correction will be made to the on-line minutes. MISCELLANY/ANNOUNCEMENTS None. PRESS AND WEB PAGE UPDATES Bob Ross suggested that additional links should be added to the eigroup.org web site to direct visitors to the IBIS 4.1 review text. In addition, the current link on the EDA.org site to the directories and files previously available through anonymous FTP no longer works, as anonymous FTP has been discontinued on EDA.org. Bob proposed that a new link to a formal HTML directory of files be added to the EDA.org IBIS site. Bob Ross also mentioned that a new book by Eric Bogatin, called "Signal Integrity Simplified," contains a chapter with a significant discussion on IBIS. A summary of the book is available from the publisher: http://vig.prenhall.com/catalog/academic/product/0,4096,0130669466,00.html NEW MODELS AVAILABLE, LIBRARY UPDATE No new models received. OPENS FOR NEW ISSUES No new issues. INTERNATIONAL/EXTERNAL PROGRESS - IEC 62014-3 (ICEM) Integrated Circuit Electromagnetic Model Proposal No update. - JEDEC Activity Report Lynne Green noted that the JEDEX 2004 conference is being planned for April 15 and April 16, 2004. More information can be found at: http://www.jedex.org/ PCB EAST SUMMIT SUMMARY Michael Mirmak summarized the events at the PCB East Summit, held on October 21. Attendance was good, with 18 people from 12 organizations participating. The quality of technical presentations and discussion was high, with excellent suggestions from the participants as to future actions on S2IBIS3 and ICM, among other activities. Michael again thanked NESA's Kathy Breda and Ed Sayre in addition to Lynne Green for their help in making the PCB East IBIS Summit a success. The presentations given at the summit can be found on the IBIS web at: http://www.eda.org/pub/ibis/summits/oct03/ DESIGNCON 2004 SUMMIT DISCUSSION Michael Mirmak reported that most activities relating to IBIS co-sponsorship of DesignCon have been completed, although discussions regarding refreshments still continue. Guy deBurgh confirmed that he is still planning to attend and will be bringing the IBIS booth. He requested that IBIS members contact him with any logo updates. Bob Ross suggested that the booth would provide an excellent forum for discussion and distribution of the ICM specification. Bob also mentioned that lunch arrangements should be finalized as soon as possible; the expense is likely to be relatively high (around $1000) due to the lunch being provided at the convention site. Lynne Green mentioned that an announcement of the first call for papers should be arranged for mid-November. In addition, she and Michael agreed to complete a written appeal to members for sponsorship contributions for lunch at the summit. EUROPEAN DATE SUMMIT PLANNING Bob Ross reported that he and Ralf Bruening of Zuken have been continuing to plan for a European IBIS Summit at DATE 2004. The DATE Summit is currently scheduled for Friday, February 20 in Paris. Eckhard Lenski noted that he would have to inquire regarding his own attendance and asked whether any IBIS officers might participate. Lynne Green may be able to attend personally if her visit could be coordinated with other Cadence European activities. Ralf is completing the logistical arrangements for the location, refreshments, etc., but expects that rather large contributions would be needed from several member companies to make the event happen. 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. The alpha version of IBISCHK4 is available for download: http://www.vhdl.org/pub/ibis/ibischk4_beta A review of the BUG reports still to be addressed was conducted during the Technical Discussion portion of the meeting (see below). IBIS QUALITY COMMITTEE Lynne Green reported that meetings continue every two weeks, with the next meeting scheduled for November 4. Lynne noted that a status update from the Committee was presented during the PCB East IBIS Summit. IBIS MODEL REVIEW COMMITTEE Lynne Green reported that no new models have been received by the committee since the last meeting. S2IBIS3 Michael Mirmak mentioned that a full update of S2IBIS3 developments was provided in a formal presentation by Ambrish Varma at the PCB East IBIS Summit. 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. Ambrish will distribute a call for feedback on the latest code using the reflector. IBIS ICM STATUS Lynne Green confirmed that an alpha test version of the ICM 1.0 parser will be available in early November. Michael Mirmak reported that a BIRD and BUG filing procedure and text are being created for ICM, with much the same format. Bob Ross suggested that additional web subdirectories would be required to store the filed reports. Names such as IBIRD and IBUG are being considered for the new report templates. NEW ADMINISTRATIVE ISSUES No new issues. BIRD83: SERIES ELEMENT CLARIFICATIONS Michael Mirmak reported that, outside of formatting suggestions by Bob Ross, no comments have been received on BIRD83. Bob Ross noted that a technical issue remains: if the column header "function_table_groups" is sufficient to require the use of the [Series Switch Groups] keyword, or whether the header and appropriate data must both be present. Michael agreed that this should be clarified in the text, but only after the behavior of the parser is confirmed. Bob added that the original text that the BIRD changes should be noted in the BIRD itself. In addition, the change marks are usually rendered as "|*" as opposed to "*|" in most BIRDs. Michael noted that there were no explicit links between [Series Switch Groups], [Series MOSFET] and the [On] and [Off] keywords. Bob suggested that the specification language implies that, if no limit or relationship is explicitly noted, none is intended. The current BIRD text was withdrawn from consideration by Michael Mirmak. A BIRD 83.1 version, addressing the issues above, will be distributed for discussion at the next Open Forum meeting. BIRD84: DRIVER SCHEDULE CLARIFICATIONS Arpad Muranyi noted that BIRD84 consists of two portions. The first, a clarification of the subparameters allowed in the top-level and scheduled models, has generated no comments. The second part, defining "event" and describing how "events" trigger scheduled models, has generated one set of comments on the IBIS reflector which Arpad found ambiguous. Despite Arpad's efforts, no additional information has been forthcoming from the comments' author. Bob Ross mentioned that the text describing events as not being held to the next clock cycle conflicts with the ASCII drawing provided. Treatment of overclocked buffers was never intended by the original [Driver Schedule] keyword definition. John Angulo also noted that a one-sentence definition of "event" may not be enough to clarify its use. A cautionary note regarding [Driver Schedule] and overclocked buffers may be necessary. The current BIRD text was withdrawn from consideration by Arpad. A BIRD 84.1 version, addressing the issues above, will be distributed for discussion at the next Open Forum meeting. BIRD85: Slew Time Clarifications John Angulo introduced BIRD85, which addresses the use of the [Ramp] keyword within [External Model]. The BIRD alters the interpretation of BIRD75.8 to make [Ramp] a requirement for [External Model]s; however, the data under [Ramp] in this case may be collected under conditions different than those recommended by the "Notes on Data Derivation" elsewhere in the Specification. The [Ramp] data would be used in the [External Model] context to improve simulation efficiency and crosstalk estimation by providing an initial timestep target to the simulator. Michael Mirmak observed that, while the additional use of [Ramp] data was necessary for [External Model] simulation efficiency, models were already being created which inappropriately normalize [Ramp] data or otherwise misinterpret the specification requirements. Lynne Green commented that, while the load for [Ramp] must be resistive, the text language should be tightened to clarify how the loading is different from that explained in the data derivation notes. Bob Ross noted that the word "slew" was used without definition and that the Rload usage and voltage termination should be explained more fully. The current BIRD text was withdrawn from consideration by John. A BIRD 85.1 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 first official "reading" of the IBIS 4.1 specification, and called for comments. None were issued at the meeting. Bob Ross reiterated his suggestion that a new link to the 4.1 text be added to the web site. In addition, he suggested that the text of the revised BIRDs described above be added to the draft 4.1 document as soon as possible, in addition to BIRD 82.2. Further, there are several references in the current 4.1 text to the 80 character per line limit which was recently expanded to 120 characters. Explicit references to the 80 character limit should be removed. Michael Mirmak suggested that the term "deprecated" be added to non-preferred keywords such as [Driver Schedule] and [TT], similar to the format used by the W3 Consortium in describing HTML. Further, he suggested that a 4.1 "tree" showing the hierarchy of keywords, be added to the 4.1 specification, similar to that used for ICM 1.0. Bob agreed that both might be useful, but that they should be deferred until the 4.2 specification. 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.vhdl.org/pub/ibis/wip/ IBISCHK4 & BUG TRACKING STATUS John Angulo reported that he had written a recommendation for addressing the problems reported in BUG68 and had revised his recommendation for BUG73. BUG68 is addressed by forcing the parser to ignore small differences in the I-V curve result data table. BUG73 is addressed by ignoring non-monotonic I-V table data points except those closest in value to the V-T data table endpoint. Treatment of ECL models will need detailed discussion in a future Open Forum meeting. Both updated code fragments have been provided to Atul Agarwal for inclusion in the beta parser release. NEXT MEETING: The next Open Forum teleconference has been scheduled for November 14 from 8:00 AM to 10:00 AM US Pacific Standard Time. Votes regarding the approval of BIRD83, BIRD84 and BIRD85 are 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) 451-1871 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. 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