DATE: 2/25/02 SUBJECT: February 22, 2002 EIA IBIS Open Forum Meeting Minutes VOTING MEMBERS AND 2002 PARTICIPANTS LIST: 3Com (& CommWorks) Roy Leventhal*, James Goshorn* Ansoft Corporation (Eric Bracken) Apple Computer Kim Helliwell Applied Simulation Technology Fred Balistreri, Norio Matsui Avanti (Hailong Wang) Cadence Design Lynne Green* Cisco Systems Syed Huq, Abdulrahmun Rafiq, Zhiping Yang Cypress Semiconductor (Rajesh Manapat) EMC Corporation (Brian Arsenault) Fairchild Semiconductor Adam Tambone Huawei Technologies (Rachild Chen) IBM Greg Edlund*, Pravin Patel Innoveda John Angulo*, Guy de Burgh* Intel Corporation Stephen Peters*, Arpad Muranyi*, Will Hobbs, Pete Block, Ben Silva* LSI Logic [Larry Barnes], Frank Gasparik* Mentor Graphics Bob Ross*, Ian Dodd*, Mike Donnelly, Matt Hogan, Sherif Hammad* Micron Technology Randy Wolff* Mitsubishi (Tom Cao) Molex Incorporated Gus Panella Motorola Rick Kingen National Semiconductor Milt Schwartz NEC Corporation (Akimoto Tetsuya) North East Systems Associates (Edward Sayre) Philips Semiconductor (D.C. Sessions) Quantic EMC (Mike Ventham) Siemens (& Automotive) AG Helmut Katzier Signal Integrity Software Barry Katz*, Walter Katz, Robert Moles, Daniel Nilsson, Kevin Fisher, Steve Coe, Wiley Gillmor, Douglas Burns, Eric Brock, Sigrity Raj Raghuram SiQual Scott McMorrow, Dave Macemon, Rob Hinz Texas Instruments Thomas Fisher, (Jean-Claude Perrin) Time Domain Analysis Systems Steve Corey, Dima Smolyansky Tyco Electronics (Tim Minnick) Via Technologies (Weber Chuang) Zuken (& Incases) (Michael Schraeder) OTHER PARTICIPANTS IN 2002: Actel Prabhu Mohan Apt Software Atul Agarwal Brocade Communications Robert Badal Compaq Shafier-ur-Rahman EIA Cecilia Fleming* Matsushita (Panasonic) Atsuji Ito National Institute of Applied Sebastian Calvet (& Motorola) Science (INSA) Northrup (Litton) Robert Bremer Shindengen Elecric Mfg. Co. Tsuyoshi Horigome TDK Yoshikazu Fujishiro Xilinx Susan Wu, J.L. de Long Independent Larry Barnes* 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 Bridge Number Reservation # Passcode March 8, 2002 IBIS Summit Meeting, Paris France (No teleconference) March 29, 2002 1-877-299-1938 N/A 8472324 (International Dial-In: 1-617-801-9666) All meetings are 8:00 AM to 9:55 AM Pacific Time. We try to have agendas out 7 days before each Open Forum, and meeting minutes out within 7 days after. When you call into the meeting, ask for the IBIS Open Forum hosted by Stephen Peters and give the reservation number and passcode. NOTE: "AR" = Action Required. -------------------------------- MINUTES ----------------------------------- INTRODUCTIONS AND MEETING QUORUM Frank Gasparik of LSI Logic introduced himself as an IC designer who is taking over Larry Barnes' IBIS activities. Sherif Hammad from Mentor Graphics develops IBIS models and is most interested in LVDS and pre-emphasis buffer issues. Ben Silva from Intel Corp. is a signal integrity engineer responsible for IBIS modeling. MEMBERSHIP UPDATE AND TREASURER'S REPORT Stephen Peters reported that EIA has received payments from 17 companies. In addition, Stephen has received verbal commitments from two others. This is out of a total of 37 invoices. Stephen stated that a reminder letter will go out this coming week to those companies that have not yet responded to the invoices. We are waiting for final invoice analysis and ledger report for 2001. The EIA accounting contractor will change for 2002, so we need the report as soon as possible. REVIEW OF MINUTES AND AR'S The January 11, 2001 IBIS Minutes were approved after correcting the name and spelling of Sebastien Calvet under the - IEC 62014-3 (ICEM) Integrated Circuit Electromagnetic Model Proposal topic. The January 28, 2001 IBIS Summit Meeting Minuts were approved without change. The ARs were discussed during the meeting. MISCELLANY/ANNOUNCEMENTS None. PRESS AND WEB PAGE UPDATES Stephen Peters reported that Syed Huq put out a note requesting IBIS roster updates. The page has been updated per responses. Some listings may be dropped based on no response (that is the way we purge old or obsolete information.). The member company listings are retained and updated regardless of response. Stephen also noted that Greg Edlund submitted updated awk scripts to compare waveforms. Syed uploaded them under the ibis home page Accuracy Info link at: http://www.vhdl.org/pub/ibis/accuracy/ NEW MODELS AVAILABLE, LIBRARY UPDATE Roy Leventhal reported that the IBIS Models link has been updated on February 1, 2002. Bob Ross noted that some links for FPGA and FPSC IBIS models have been moved to Lattice Semiconductor where registration is required. A number of other models are reported and available by direct contact. Roy will be updating the list again in a few weeks. OPENS FOR NEW ISSUES None. INTERNATIONAL/EXTERNAL PROGRESS - IEC 62014-3 (ICEM) Integrated Circuit Electromagnetic Model Proposal (formerly, IEC 93/67/NP IBIS and EMC Simulation) - Stephen Peters and Bob Ross still have the action item to review the specification, and Stephen encouraged others to do so as well. - JEDEC JC-16 - Modeling and Testing - No report. - T10, Project 1414-DT - SCSI Signal Modeling (a Technical Committee of the National Committee for Information Technology (NCITS)) - Larry Barnes reported on a T10 meeting held on Thursday, February 21, 2002. The T10 and T11 SCSI committee is very interested in the progress of BIRD74.4. Stephen Peters stated that it had been approved. Larry was most interested when it would be formally approved by the IBIS committee and also when semiconductor vendors could write models with its features. Stephen estimated that a stable IBIS specification that included BIRD 74.4 would be available in about a year, but that Larry should inquire of the EDA vendors when they would support the fallback sub-model features in BIRD 74.4. Larry requested that we keep him informed on Ver. 4.0 progress. IBIS SUMMIT MEETING AT DESIGNCON 2002 FEEDBACK Stephen Peters reported that he felt the IBIS Summit Meeting held on January 28, 2002 at DesignCon2002 had some of the best presentations ever. The meeting went very well. Stephen asked for other comments. Several people commented on the SiQual model survey presentation. Stephen noted that it along with others provides motivation for a Model Qualification Working Group to be discussed later. Stephen thanked Milt Schwartz and National Semiconductor for their sponsorship, Bob Ross for his organizational efforts, and Guy de Burgh and Innoveda for the IBIS booth during DesignCon2002. Bob noted that the extra presentation copies served as handouts at the booth, and this worked well. Bob also noted we have reserved booth 703 for next year. Finally, Stephen noted that the presentations are now uploaded to the IBIS Home page at: http://www.eda.org/pub/ibis/summits/jun02/ DATE 2002 IBIS SUMMIT MEETING Bob Ross reported that plans are underway for a European IBIS Summit Meeting on Friday, March 8, 2002 associated with DATE2002 in Paris France. The co-sponsors are EADS, Innoveda, Mentor Graphics. The room is probably the Van Gogh/Pissarro rooms in the Concord Lafayette Hotel next to the DATE show. We are planning for about 25 people, similar to the participation two years ago. Three more announcements have been sent. A full program is planned. We have the following presentations tentatively scheduled: IBIS Activity Report - Stephen Peters, Intel Multi-lingual Modeling within IBIS Update - Tom Dagostino and Bob Ross, Mentor Graphics Update on Zuken's ibisinf Utility - Alexander Loehr and Michael Schraeder, Zuken IBIS Modeling at STMicroelectronics and Issues - Fabrice Boissieres, STMicroelectronics Principle of Crossbar-current Calculation from IBIS Models - Katja Koller, Siemens AG XML in IBIS based Buffer Modeling - Alexander Loehr and Michael Schraeder, Zuken ICEM Status - Jean Claude Perrin, Texas Instruments Two other presentations are pending. The agenda will be sent out one week in advance. All presenters are expected to bring copies since the people involved with copying will be involved with the DATE show. Electronic copies are still necessary for archiving and to make presentations available for those unable to attend. IBIS QUALIFICATION COMMITTEE Stephen Peters followed up on a discussion from Barry Katz of Signal Integrity Software regarding forming an IBIS Model Qualification Committee to describe processes for producing quality IBIS models. Barry opened the discussion by stating the objective and planned deliverables of the committee. The Committee wants to provide methods to dramatically improve the quality of IBIS models. It would investigate metrics to assess the quality for complete information and also to deal with portability of models. One output might be a standardized spreadsheet. Barry stated that a detailed standard might evolve. It might have semiconductor vendors and other model providers issue a qualification report with IBIS models. Stephen asked Greg Edlund how this relates to the IBIS Accuracy Report effort he chaired. Greg stated that Barry's proposal is very complementary. Greg added that originally the Accuracy Working group was interested in a standard, but backed off because of the standardization process efforts. Barry stated that he would like to make the process as formal as possible. Roy Leventhal cautioned that we would want to initially keep the document as informal as possible to develop trust and to communicate more effectively the ideas to semiconductor model providers. Greg stated that it might eventually need some level of formalization. Stephen noted, and Barry agreed, that this document should be of interest to both model providers and users. Several people including Barry, Roy, Greg, Lynne Green and Sherif Hammad expressed interest in serving on a committee. Bob Ross suggested possible members and suggested that Barry send a note to the IBIS reflector asking for interested participants. Bob will also supply some additional information to Barry. IBIS MODEL REVIEW COMMITTEE DISCUSSION Bob Ross reported no new models have been received. MAJORDOMO UPDATE John Angulo reported one spam posting, and the source has now been blocked. IBIS VERSION 4.0 REVIEW Stephen Peters reported that the draft document is ready review. The document is under the Version 4.0 Work in Progress link of the IBIS Home page: http://www.eda.org/pub/ibis/ver4.0_wip/ under ver4_0wip.ibs. Some intermediate versions with the corresponding BIRD documentation are also shown. Stephen noted that a .pdf and perhaps a .doc version of the draft document also need to be created. Arpad Muranyi agreed to create those documents. Stephen announced that today's discussion will be considered the first reading of the draft specification. Stephen stated that the second and third readings would be held over the course of the next two teleconferences, with a final vote on the Version 4.0 draft tentatively planed for the May 10th teleconference. Stephen went on to discuss the first of the version 4.0 additions, the [Receiver Thresholds] keyword, which is positioned just below the existing [Model Spec] keyword. [Receiver Thresholds] was added to allow manufactures to more realistically specify the switching thresholds of a receiver. Key subparameters are Vin*_ac and Vin*_dc. The '_ac' subparameters specify the voltage an input waveform must cross in order to guaranteed a change in the state of a receiver's output, while the '_dc' subparameter specifies the voltage the input waveform must stay above or below to guarantee that the receiver's output will not change state. Stephen also pointed out that the nominal threshold voltage (Vth) is specified along with a sensitivity to power supply variations. This keyword also supports differential receivers. Associated with this keyword is a new power supply keyword [External Reference]. This keyword is used if the Reference_supply subparameter of the [Receiver Thresholds] keyword has an argument of Ext_ref. Finally, Stephen noted that we would be reviewing the rest of the BIRDs that effect the MODELS section of the IBIS specification at the next teleconference. Stephen urged interested parties to further review the specification and come prepared with comments. CONNECTOR PROPOSAL REPORT Stephen Peters reported on meetings held on January 15 and 22 and February 12 and 19, 2002. The connector committee has decided to enhance the current connector spec to include provisions for a general purpose interconnect description that would support coupled package models. Arpad Muranyi of Intel is currently working on a proposal for inclusion into the connector specification. One major component of this enhancement will be the addition of nodal path descriptions. Further work has also been done on editorially reviewing the specification. Arpad Muranyi asked if it was possible to drop support for the current .pkg and .ebd formats. Stephen replied that we still need to support these formats for backwards compatibility reasons, but that they may be eventually supersede by the new interconnect format. The stand alone Touchstone(r) specification document has been reviewed, and an updated draft version (ver 1.1) has been uploaded to the IBIS web site at: http://www.eda.org/pub/ibis/connector/ The connector committee would like to eventually get this document approved as an EIA standard, and to that end Stephen has contacted Agilent and will attempt to get them involved in the standardization process. IBIS FUTURES REPORT Stephen Peters reported on meetings held January 17 and 24 and February 14,2002. At the last futures meeting the group discussed the future of IBIS-X and the IBIS macro language. It was decided to archive the current IBIS-X work and concentrate on reviewing the forthcoming BIRD 7X from Mentor Graphics. Future committee meetings will resume after this BIRD is released. IBISCHK3 & BUG TRACKING STATUS Bob Ross reported that he is still waiting for a work estimate regarding producing ibischk3.2.9 to deal with about 8 pending BUG reports. - BUG66 - Improve Truncation of Long File Name Bob Ross introduced BUG66 from Jim Bell of SiQual. Currently ibischk3 truncates the file name in the [File Name] keyword if it exceeds the number of character limits. This is an error. However it does the truncation starting with the .ibs extension and then needlessly reports some more errors related to file name mismatch. BUG66 offers two solutions, one of which is just to not truncate the file name and eliminate the extra error messages. BUG66 was classified as ANNOYING, LOW, OPEN with plans to remove the extra error messages in the next release. - BUG67 - Phantom Warnings Use Wrong Line Numbers and then Disappear Bob Ross introduced BUG66 from Matthew Flora of Innoveda. Some additional bogus warning messages (giving the same line number in the test case) are issued for I-V table under [Model] when the subparameters Rref, Cref, and Vref are entered (an unrelated action). These bogus warnings are not issued when these subparameters are missing. This appears to be an annoying pointer bug in ibischk3 that should be isolated and corrected. BUG67 was classified as ANNOYING, LOW, OPEN with plans to fix the problem in the next release. NEXT MEETING: The next meeting will be the IBIS Summit Meeting at DATE2002 on March 8, 2002 in Paris, France. No teleconference line is planned. The next teleconference meeting will be on Friday, March 29, 2002 from 8:00 AM to 10:00 AM Pacific time. ============================================================================ NOTES IBIS CHAIR: Stephen Peters (503) 264-4108, Fax: (503) 264-1831 stephen.peters@intel.com Senior Hardware Engineer, Intel Corporation M/S JF4-215 2111 NE 25th Ave. Hillsboro, OR 97124-5961 VICE CHAIR: Bob Ross (503) 685-0732, Fax (503) 685-4897 bob_ross@mentor.com Modeling Engineer, Mentor Graphics 8005 S.W. Boeckman Road, Wilsonville, OR 97070 SECRETARY: Guy de Burgh (805) 988-8250, Fax: (805) 988-8259 gdeburgh@innoveda.com Senior Manager, Innoveda 1369 Del Norte Rd. Camarillo, CA 93010-8437 LIBRARIAN: Roy Leventhal (837) 797-2152, Fax: (847) 222-2799 roy_leventhal@3com.com Senior Engineer, CommWorks Corp. (a wholly owned 3Com subsidiary) 1800 W. Central Rd. Mt. Prospect, IL 60056-2293 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) 869-2320, Fax: (425) 881-1008 jangulo@innoveda.com Development Engineer, Innoveda 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. ibischk-bug@eda.org To report ibischk2/3 parser bugs. The Bug Report Form Resides on eda.org in /pub/ibis/bugs/ibischk/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 found by selecting the Electronic Information Group under: http://www.eigroup.org/ibis/ibis.htm Check the pub/ibis directory on eda.org for more information on previous discussions and results. You can get on via FTP anonymous. ============================================================================