DATE: May 13, 1997 SUBJECT: 5/9/97 EIA IBIS Open Forum Minutes VOTING MEMBERS AND 1997 PARTICIPANTS LIST: AMP Jeff Walden Applied Simulation Technology Dileep Divekar*, Norio Matsui, Raj Raghuram Cadence Design C. Kumar*, Don Telian Cypress Bruce Wenniger Digital Equipment Corp. Jeff Chu* Hewlett Packard, EEsof Karl Kachigan, Henry Wu High Design Technology (Razvan Ene) HyperLynx Kellee Crisafulli INCASES Olaf Rethmeier Intel Corporation Stephen Peters*, Arpad Muranyi, Henry Maramis* Interconnectix Bob Ross* Mitsubushi Tam Cao Motorola Ahmed Omer National Semiconductor Syed Huq*, Cheng-Yang Kao, Mike Bristol, Peter Laflamme, Kevin Smith NCR Dave Moxley*, Richard Mellitz NEC (Hiroshi Matsumoto) Quad Design/Viewlogic Jon Powell, Chris Rokusek* Quantic EMC (Mike Ventham) Texas Instruments Thomas Fisher Thomson-CSF/SCTF (Jean LeBrun) UniCAD Canada Ltd. (Celso Faia) VeriBest Ian Dodd, William Bell VLSI Technology Harish Patel, D.C. Sessions Zuken-Redac (John Berrie) OTHER PARTICIPANTS IN 1997: 3M Fran Hart Actel Scott Schlachter Acuson & Free Model Foundation Richard Munden Alcatel John Fitzpatrick Ansoft Eric Bogatin Apteq Design Systems Dan FitzPatrick Compaq Weston Beal EIA Patti Rusher* EMC Fabrizio Zanella Micron Technology Brian Johnson Molex Gus Panella North Carolina State U. (Michael Steer) S3, Inc. Porsh Shih, Sarathy Sribhashyam Ultratest International Charles Im Zeelan Technology George Opsahl 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 5/30/97 (916) 356-9200 1-137662 1259125 6/12/97 FACE-TO-FACE at Anaheim, CA - No Telephone Bridge 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 Will Hobbs and give the reservation number and passcode. NOTE: "AR" = Action Required. -------------------------------- MINUTES ------------------------------------- INTRODUCTIONS AND MEETING QUORUM Henry Maramis from Intel called in for Arpad Muranyi. MEMBERSHIP UPDATE AND TREASURER'S REPORT Patti Rusher estimated about $12,000, up from the previously reported figure of $10,129 in the EIA/IBIS account based on High Design Technology joining and purchasing the Golden Parser. Patti will have the current information available by the next meeting. She plans to check with accounting to find out who still owes money. This concerns only four members. They will be sent new invoices to be paid by the June meeting to avoid being dropped from EIA/IBIS membership. REVIEW OF MINUTES AND AR'S No corrections. Bob Ross stated that the AR's to issue BIRDs were still pending. MISCELLANY/ANNOUNCEMENTS None. PRESS AND WEB PAGE UPDATES Patti Rusher reported that Dr. Howard Johnson of "Black Magic" fame wrote an article, "The I/O Buffer Information Specification (IBIS), A Standard for Chip/Receiver Modeling" in Printed Circuit Design, May 1997, pp. 17-20. Bob Ross mentioned that the main concern was lack of IBIS models, and he responded privately that commercial vendors were now providing many IBIS models. Patti also mentioned that the issue included several articles concerning EDIF 4 0 0 and also a useful article concerning the national/international standards body organizational structures. This PCB issue is usually available at the Design Automation Conference. Syed Huq mentioned that he will present a paper "Understanding and Using IBIS Models for Signal Integrity Analysis" at the High-Level Electronic System Design Conference (HESDC97) in October in Santa Clara, California. Syed reported on Web page updates: a new Interconnectix logo and the High Design Technology addition to the roster. NEW MODELS AVAILABLE, LIBRARY UPDATE None. OPENS FOR NEW ISSUES Stephen Peters for job posting policy on the IBIS reflectors. C. Kumar on a new technical proposal for SSO. JOB POSTING ON THE IBIS REFLECTORS Stephen Peters raised the question regarding a policy concerning positing jobs on the IBIS reflectors. This was based on a recent posting on many reflectors. Patti Rusher indicated that standards body reflectors are used for company supported standards related business and are not to be used for recruitment. Bob Ross indicated that this shall be the policy for the IBIS reflectors. The SI reflector could be used for brief, informational job postings directly by the organization (not by recruiting companies) according to the SI reflector policy because this is a private, non-standards based reflector. Bob will add a statement at the end of the Minutes stating job posting messages are not permitted. However, unless we go to moderated refectors, we cannot prevent any such posting. DESIGN AUTOMATION CONFERENCE (DAC) 1997 IBIS MEETING PLANNING Patti Rusher reported that she has scheduled a meeting room for the EIA/IBIS Summit meeting on Thursday, June 12, 1997 in Anaheim, California at the Marriott Hotel next door to the Convention Center. She plans for 25 people. A continental breakfast will be available, and the room is scheduled from 9 AM to 5 PM for the meeting. She will provide an overhead projector and chart board. Bob suggested that lunch also be provided. Bob asked for a telephone so that people could call in for the business segment, but Patti stated that the cost was very high - in excess of $500. So we decided not to have teleconferencing available for this meeting. Syed Huq is still seeking presentations for the IBIS DAC meeting. Saburo Hohjo from Hitachi will report on the EIAJ I/O Interface Model status. He is one of the authors. Syed would like the final agenda firmed up by May 30. AR - Presenters send to Syed Huq presentation topics and time estimates for presentation topics at the IBIS Summit meeting. Patti offered local copy service for presentations. Electronic copies will be put on vhdl.org. Otherwise, bring copies for distribution. Activities will also include election of EIA/IBIS officers for 1997-1998 and discussions leading to the approval of the final BIRDs and to the ratification of Version 3.0. VERSION 3.0 RATIFICATION Bob Ross asked what should be accomplished at the IBIS Summit meeting regarding ratification of Version 3.0. Enough BIRDs have been approved to issue a new Version. However, Bob felt it would be nice to include the Series Switch functionality. In any case, the Version 3.0 available at the June 12 meeting will not have gone through a good editorial review. The sense of the Committee was to put it forward for a vote, even in its rough stage to endorse the new functions. This would allow moving forward with contracting parser development and also to do an editorial cleanup as part of the Version 3.1 release. The parser development process itself leads to editorial changes to resolve ambiguity. Other sources including reflector comments and "IBIS Tree" contributions from Atsushi Ogawa of NEC in Japan are providing valuable input and motivation for a cleanup and perhaps organizational revision for clarity. The standard is becoming quite large. Many of us who have been participating in its development from Version 1.1 are able to track the additions, but someone unfamiliar with IBIS will find that IBIS Version 3.0 contains an intimidating amount of information. Patti Rusher suggested hiring a documentation person to help re-write IBIS. This suggestion will be considered. The conclusion of this discussion is that the Committee is willing to proceed with ratifying IBIS Version 3.0 in its rough stage and defer the detailed editorial review and revisions to IBIS Version 3.1. INTERNATIONAL PROGRESS Patti Rusher reported no further progress on IBIS Version 2.1 international ratification, but that the USTAG group had considered combining IBIS with another proposal in response to a concern that the IBIS scope was too narrow. Patti expects IBIS to move forward, without change, based on its existing wide-spread usage. Patti will be meeting with the USTAG group and will give us a report at the next EIA/IBIS meeting. Bob Ross reported that the EIAJ I/O Interface Modeling subgroup has formed three internal subgroups to address comments, to provide examples and demonstrations, and to provide information on activities. Several EIAJ members needed more time to determine their internal corporate support of the EIAJ proposal. IBIS COOKBOOK PROGRESS Stephen Peters reported only slight progress. FAQ UPDATE Syed Huq has updated the FAQs by removing modem references, providing updated parser and librarian information. He has also added a s2ibis FAQ section taken from the original s2ibis for Version 1.1 document. S2IBIS2 ISSUES AND NT Bob Ross reported continued s2ibis2 questions and comments. He has provided information to NCSU for a possible fix. He also plans to post an interim fix to the resolution problem to change the printout to 4 decimal digits to overcome the resolution problem so that s2ibis2 can be used. BIRD41.1 - MODELING SERIES SWITCHABLE DEVICES Bob Ross reported that he sent out a netlist to test an approach to model series switches. John Fitzpatrick has been too busy or on vacation to move forward with BIRD41.1. In response to a question by Stephen Peters, Bob expected BIRD41.1 to still cover discrete and diode models and also series MOSFET switches. There is still some possibility of a combined syntax for series diode tables and series switches. Also covered is a logic table for stating the allowable combinations of "on" and "off" states of a component. Bob plans to see that BIRD41.2 is issued next week to capture the progress made so far. CONNECTOR MODELING Stephen Peters reported no further work. The correlation with matrix format still needs to be done, but no one has time. Bob Ross felt that this proposal may not be part of IBIS Version 3.0. He may still be willing to publish an existing implementation in BIRD format. There already exists vendor specific implementations on how to use the data that is provided. It would take a lot of time and effort to come to a common agreement. MODELING EARLY CLAMPS IN IBIS No report. CURRENT VERSUS TIME TABLE (IT) C. Kumar described a proposal where the currents at the ground and power nodes would also be tabulated for the associated VT table tabulations to give better predictions for ground and power bounce. These currents are easily available from Spice deck extractions (and also from measurements). Kumar stressed that the voltage needed was at the buffer itself. Bob Ross questioned whether one or two tables was needed, since the fixture load already defines the output current. Kumar will work with Bob to organize a proposal. NEXT MEETING: The next meeting is on Friday, May 30, 1997, 8:00 A.M. to 9:55 A.M. ============================================================================== NOTES IBIS CHAIR: Bob Ross (503) 603-2523, Fax (503) 639-3469 bob@icx.com Modeling Engineer, Interconnectix 10220 SW Nimbus Ave, K4, Portland, OR 97223 VICE CHAIR: Syed Huq (408) 721-4874, Fax: (408) 721-4785 huq@rockie.nsc.com Staff Applications Engineer, National Semiconductor, M/S A-2595 2900 Semiconductor Drive, Santa Clara, CA 95052 LIBRARIAN: Jon Powell (805) 988-8250, Fax: (805) 988-8259 jonp@qdt.com Transmission-Line Products Manager, Quad Design/Viewlogic 1385 Del Norte Rd., Camarillo, CA 93010 SECRETARY: Vacant 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: ibis-request@vhdl.org To join, change, or drop from either the IBIS Open Forum Reflector (ibis@vhdl.org), the IBIS Users' Group Reflector (ibis-users@vhdl.org) or both. State your request. ibis-info@vhdl.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@vhdl.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@vhdl.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@vhdl.org To report ibischk2 parser bugs. The Bug Report Form Resides on vhdl.org in /pub/ibis/bugs/bugform.txt along with reported bugs. 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.eia.org Check the pub/ibis directory on vhdl.org for more information on previous discussions and results. You can get on via ftp anonymous, or send an e-mail request to the automatic archive server, archive@vhdl.org. "IBIS Spoken Here" placards are available from Jon Powell (jonp@qdt.com) for use at trade shows. ==============================================================================