DATE: 03/15/04 SUBJECT: March 12, 2004 EIA IBIS Open Forum Meeting Minutes VOTING MEMBERS AND 2004 PARTICIPANTS Ansoft Corporation (Eric Bracken) Apple Computer (To Be Determined) Applied Simulation Technology Norio Matsui Cadence Design Systems C. Kumar, Lance Wang*, Patrick dos Santos Cisco Systems Sergio Camerlo*, Syed Huq* Fairchild Semiconductor (Graham Connolly) Hitachi ULSI Systems Kazuyoshi Shoji Huawei Technologies (Jiang Xiang Zhong) Intel Corporation David Keates, Peter T. Larsen Wilson Leung, Michael Mirmak*, Arpad Muranyi*, Steve Peterson LSI Logic Frank Gasparik Matsushita (Panasonic) Atsuji Ito Mentor Graphics John Angulo*, Weston Beal, Ian Dodd*, Guy de Burgh, Stephane Rousseau, Eric Rongere Micron Technology Paul Gregory, Randy Wolff* Molex Incorporated (Gus Panella) Motorola (Rick Kingen) National Semiconductor (Lee Sledjeski) NEC Electric Corporation (Itsuki Yamada) North East Systems Associates Edward Sayre Philips Semiconductor (D.C. Sessions) Samtec (Corey Kimble) Siemens AG Eckhard Lenski*, Manfred Maurer Siemens Medical (Acuson) David Lieby Signal Integrity Software Robert Haller*, Barry Katz Sigrity Raymond Chen, Jiayuan Fang Sun Microsystems (Tim Coyle) Synopsys (Hailong Wang) Texas Instruments Hector Torres, Jean Claude Perrin Teraspeed Consulting Group Tom Dagostino, Scott McMorrow, Bob Ross* Time Domain Analysis Systems Steve Corey Zuken (& Incases) Ralf Bruening, Laetitia Simonian, Caroline Legendre OTHER PARTICIPANTS IN 2004: Alcatel Jean-Pierre Bouthemy Apache Design Yu Liu Bayside Design Daniel Lambalot, Kevin Roselle Conexant Garry Felker Cortina Systems Robert Badal EADS Olivier Maurice Edality Rob te Nijenhuis EFM Ekkehard Miersch Extreme Networks Lin Shen Fraunhofer IZM Ege Engin GEIA (Chris Denham) Green Streak Programs Lynne Green* Independent Kim Helliwell, Jon Powell INSA Etienne Sicard Netlogic Microsystems Eric Hsu North Carolina State Univ. Ambrish Varma Politecnico di Torino Igor Stievano Samsung Il Seong Silverback Systems Gil Gafni Sintecs BV Hans Klos 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 April 2, 2004 1-916-356-2663 2 309-9489 April 5, 2004 1-916-356-2663 3 242-0634 (Summit) 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 Sergio Camerlo of Cisco joined the Open Forum to discuss IBIS expansion to include I-t tables. 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 reported that neither the 2003 financial report nor the January or February monthly summaries have been received from the GEIA. Bob Ross suggested that the GEIA be reminded of the need for the reports. Michael Mirmak accepted the AR. REVIEW OF MINUTES AND ARS Bob Ross noted that the minutes from the February 20 Open Forum incorrectly spelled the word "committee" and improperly described an SPI conference in Italy as sponsored by the EPEP. Michael Mirmak stated that corrections would be made as soon as possible. Without objection, the summit and open forum minutes were approved with the noted changes. Michael Mirmak reported that the GEIA expressed concern that meeting minutes were being made publicly available before approval by the GEIA legal staff. Randy Wolff commented that he did ensure GEIA representatives were copied on final minutes distributions, but that no acknowledgement of legal approval was ever received by him for any set of minutes. Bob Ross suggested that the GEIA be asked if they can provide legal approval within one day of receipt; the usual practice of the Open Forum to publish minutes within one week of meetings could then be continued. Michael accepted the AR to discuss these suggestions with the appropriate GEIA representatives. MISCELLANY/ANNOUNCEMENTS No additional announcements were made. PRESS AND WEB PAGE UPDATES Syed Huq reported that recent EDA.org slowdowns had made viewing IBIS documents difficult. He also reported that future web updates on the EIGROUP IBIS sites would include testing of many popular internet browsers. In response to a question from Michael Mirmak, Syed stated that the development software being used would automatically validate the produced code against the HTML specifications. Bob Ross suggested that the "Free Tools" page should include a link to the Edality IBIS Development tool. Michael Mirmak and Syed suggested that the tools page include a statement as to the official policy toward postings. Bob stated that any tools links posted must be supplied free and unconditionally, with no screening of downloaders and no relicensing. Bob and Syed will develop the final text to be used for the site. NEW MODELS AVAILABLE, LIBRARY UPDATE Michael Mirmak noted that an updated IBIS model page from Roy Leventhal had been posted to the IBIS EIGROUP website. Users are encouraged to browse the information there and to forward comments to Roy or to the Open Forum board. OPENS FOR NEW ISSUES No new issues. MAILING LIST ADMINISTRATION John Angulo stated that the IBIS reflector lists continue to experience "spam" messages, but that none had been forwarded to the main lists. He reported that EDA.org went down briefly in early March for transition to new server hardware but was now operating again. Michael Mirmak commented that he saw a significant speed improvement with the new hardware. INTERNATIONAL/EXTERNAL PROGRESS - JEDEC Activity Report Michael Mirmak reminded the attendees that Lynne Green and NESA's Ed Sayre will hold a workshop on IBIS through JEDEC from 10 AM to 5 PM on April 16. Registration is available through: http://www.jedex.org - FSA Modeling Committee Lynne will also deliver a summary presentation on IBIS model quality at the Fabless Semiconductor Association on April 15. The Fabless Semicoductor Association can be found at: http://www.fsa.org - Other Activities No other activities were noted. EUROPEAN DATE SUMMIT REVIEW Eckhard Lenski reported that the European DATE summit was a success, with 17 attendees representing 11 companies. Presentations included material on EMI, IBIS 4.1 and scaling IBIS models under HSPICE. In addition, a presentation by Mr. Engin described modeling skin effect within package interconnects. Eckhard also noted that Cadence and Mentor have returned as attendees and co-sponsors, along with Zuken. DESIGNCON EAST 2004 SUMMIT PLANNING Michael Mirmak reported that nearly all logistics for the summit at DesignCon East 2004 had been completed. To encourage attendance, the IEC was giving free attendance for all three days of DesignCon to participants of the IBIS summit who registered in advance. Bob Haller noted that this was included in the second Call for Papers, but the language was somewhat "buried" in the text. A separate announcement will be sent out highlighting this arrangement once the IBIS registration page is available on the DesignCon East web site. Additionally, Bob Haller confirms that SiSoft will set up and take down an IBIS booth provided by the IEC. Michael and Guy de Burgh will ensure that the IBIS signs from the west coast booth are sent in time for DesignCon East. Finally, lunch will be provided by DesignCon as part of a Monday keynote address. Refreshment and teleconference arrangements are being finalized. Bob Ross mentioned that four presentations were already planned, including one on IBIS quality by Bob Haller, one by Bob Ross, a chair's report by Michael Mirmak and an investigation of c_comp issues by Michael Mirmak. OTHER EVENTS Bob Ross reiterated his strong suggestion that the Open Forum reserve a room for the IBIS Summit at the June 2004 DAC meeting as soon as possible. He also reminded the attendees regarding the October 2004 PCB East conference in Manchester, Massachusetts, near Boston. NESA has already expressed a willingness to host a summit during that week. Further, Eckhard Lenski was given the AR to check on additional summit opportunities in Europe. IBIS VERSION 4.1 PARSER Michael Mirmak reported that a call for parser development bids was being drafted and would be reviewed and distributed by the Open Forum shortly. IBIS QUALITY COMMITTEE Bob Haller noted that the Quality Committee met on March 9 and completed their review of the quality document. The document is likely only to need minor rewording after this point. The final document and perhaps a working example will be presented at the April IBIS summit. After the presentation, meetings will likely be held only once a month. Bob Ross suggested that the quality paper might be included as part of the upcoming Cookbook release as its own chapter or appendix. IBIS MODEL REVIEW COMMITTEE Michael Mirmak reported that no new models had been received for review. S2IBIS3 Michael Mirmak reported that no updated information was available. At present, 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 no changes to either the ICM specification or IBUG reports on the ICM parser have been submitted. The Futures Subcommittee (see below) has begun considering new specification features. FUTURES AND COOKBOOK SUBCOMMITTEES Michael Mirmak noted that the first meetings of the Futures and Cookbook subcommittees took place on Thursday, March 11. The Futures subcommittee considered six specification changes and split up work on writing up problem statements and proposals for solutions for each. The Cookbook Subcommittee reviewed the 1997 cookbook outline and also assigned individuals to propose changes to cover new features introduced since IBIS 2.1. NEW ADMINISTRATIVE ISSUES No new issues. I-T TABLES DISCUSSION Sergio Camerlo and Syed Huq of Cisco summarized the findings of a DesignCon West panel discussion on power distribution networks. The consensus of the panel was that IBIS could more accurately model power distribution issues by including table data describing current-vs-time relationships. Sergio noted that an accurate means of modeling current consumption has been sought for many years. He noted that, in general, the current of the core presented the largest problem and that the current of I/O buffers tended to be more manageable by comparison. The challenge is to predict sudden changes in current demand. In a particular case, a device found to use 300 mA under most circumstances was discovered to demand 26 A of current in a 1-2 ns period. This resulted in both a manufacturing line stop and in package and silicon consequences. Arpad Muranyi inquired as to whether this was due to simultaneously switching signals or due to other core operations. He observed that I-t curves are useful in describing buffer current distributions but are not complete descriptions of current paths in an entire device. Sergio commented that the general circumstances of the particular case described related to a memory operation and were not directly tied to buffer changes. Arpad further noted that using inductive elements at power and ground nodes can definitely help get current distributions "in the ballpark" of accuracy with V-t curves. Ian Dod observed that accurately modeling current spikes would relate to events and internal and previous states of designs, which IBIS does not currently do. Bob Ross also noted that BIRD42.3 and BIRD74 address current distributions in buffers. Further, Bob stated that the scope of IBIS has long since expanded beyond buffer descriptions to package traces and entire components. Core currents would simply be another expansion. Michael Mirmak inquired as to whether additional keywords should be added to native IBIS or whether an AMS-based 4.1 description was preferred; new keywords would mean expansions of the specification, while AMS descriptions could be addressed in application notes. Sergio commented that, "a model is better than no model." Sergio and Syed accepted an AR to create a proposal for the Futures Subcommittee. BIRD88: DRIVER SCHEDULE INITIALIZATION Bob Ross introduced BIRD88. As a result of discussions with Arpad Muranyi and the ad hoc presentations at the DesignCon West summit in January, a clarification to the initialization states of [Driver Schedule] delays is needed. The original [Driver Schedule] text implied functions and states not explicitly described. The BIRD88 changes ensure that [Driver Schedule] fits within the [Model] paradigm. Bob further noted that the BIRD was intended for IBIS 4.2 but that a vote should be delayed until extensive review of the language could be completed. The parser for the BIRD should not necessarily check the table of initialization values. BUG REPORTS John Angulo observed that he had generated new code to address BUG82 and had reviewed it with Arpad Muranyi. John Angulo and Bob Ross both suggested that the code be supplied to the parser developer with a request to recompile it, run the suite of code checks, and change the readme file for the executables appropriately. The attendees agreed that these changes should not be delayed until the 4.1 parser release. Bob Haller noted that the fix to BUG71 has finally been verified and that any notations of doubt regarding the fix could be removed from the BUG summaries on the IBIS web site. Michael Mirmak reported that unofficial draft "trees" or hierarchy summaries were available for IBIS 4.0 and IBIS 4.1. Both were placed in the specification subdirectories on the IBIS web site. NEXT MEETING The next Open Forum teleconference has been scheduled for April 2, 2004 from 8:00 AM to 10:00 AM US Pacific Standard Time. The next IBIS Summit will take place in Boxborough, Massachusetts on April 5, 2004. ============================================================================ 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 lgreen22@mindspring.com Green Streak Programs 20130 181st PL NE Woodinville, WA 98077 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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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 trademarks, brands and names are the property of their respective owners.