DATE: June 30, 1995 SUBJECT: 6/30/95 EIA IBIS Open Forum Meeting Minutes VOTING MEMBERS: AT&T Global Info Solutions Dave Moxley Cadence Design Sandeep Khanna, C. Kumar* Contec Dileep Divekar HyperLynx Kellee Crisafulli INCASES Werner Rissiek, Olaf Rethmeier Intel Corporation Stephen Peters*, Will Hobbs*, Arpad Muranyi*, Derrick Duehren Interconnectix, Inc. Bob Ross* Meta-Software Les Spruiell, Mei Wong, You-Pang Wei, John Sliney Motorola Ron Werner National Semiconductor Syed Huq*, Atul Agarwal, Cheng-Yang Kao NEC Hiroshi Matsumoto Quad Design Jon Powell Quantic Labs Mike Ventham Texas Instruments Bob Ward* Thomson-CSF/SCTF Jean LeBrun UniCAD Canada Ltd. Stephen Lum Zuken-Redac John Berrie OTHER PARTICIPANTS: ARPA Randy Harr Anacad Steffen Rochel Ansoft Henri Maramis Atmel Corporation Dan Terry Cadlab Ralf Bruning Digital Equipment Corp. Barry Katz EIA Patti Rusher* High Design Technology Michael Smith, Dr. Ing. Cosso Hewlett Packard Tom Langdorf, Karl Kachigan, Henry Wu IBM Jay Diepenbrock Integrated Silicon Systems Eric Bracken Intergraph Ian Dodd, David Wiens, Walter Katz IntuSoft Charles Hymowitz LSI Logic Corp. Satish Pratadneni Mentor Graphics Ravender Goyal, Greg Doyle MicroSim Arthur Wong North Carolina State U. Steve Lipa, Michael Steer OptEM Engineering, Inc. Benny Leveille, Ken Ehn Pacific Numerix Paul K. U. Wang Symmetry Martin Walker Synopsys, Logic Modeling G. Bill Lattin VLSI Dick Ulmer*, Sung Oh* Zeelan Technology George Opsahl, Hiro Moriyasu In the list above, attendees at the meeting are indicated by *. Upcoming Meetings: The bridge numbers for future IBIS teleconferences are as follows: Date Bridge Number Reservation # Passcode 7/21/95 (916) 356-9999 1-3147 7221442 8/11/95 (916) 356-9999 1-3150 8492193 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, ANNOUNCEMENTS Dick Ulmer and Sung Oh of VLSI introduced themselves. They come from the Personal Computer Division and are finishing Version 2.1 IBIS models for PC chip sets. VLSI is in the process of becoming a Member of EIA/IBIS. MINUTES, TREASURER'S REPORT, MISC. Minutes of 6/15/95 meeting were approved. Patti Rusher did not have an update of the treasurer's report, but there have been two additional parser purchases. Will Hobbs reported that JEDEC packaging committee is interested in IBIS and particularly the package model extension activity of BIRD28.1. Stephen Peters has been invited to talk to the September JEDEC meeting. Bob Ward gave a brief overview of IBIS to the TI JEDEC representatives. There appears to be an opportunity for cooperation and coordination. OPENS FOR NEW ISSUES Pin programmable buffer strengths from Arpad Muranyi PRESS UPDATES IBIS press release Electronic News (May 29, 1995), pg 36. IBIS mentioned in product anouncements by Cadence in Electronic News (June 5, 1995), and by Savantage in EDN (June 8, 1995) and Electronic Engineering Times (June 5, 1995). NEW MODELS Syed Huq reported that National has submitted two more Version 1.1 models for DRAM controllers to vhdl.org Model providers are interested in knowning who uses the models. Syed will pursue this when Michael Steer returns from vacation. Bob Ward feels that it is possible to put directory monitors for statistics. The intent is that eacy company which submit models can get monthly statistics on who accesses their models. These statistics would be available only to the model provider, since as Will Hobbs pointed out, company may not want their model usage monitored (product plans) exposed to others. AR - Syed contacts Michael Steer on developing a tracking system with the System Administrator of vhdl.org. EIA IBIS MEMBERSHIP UPDATE We currently have 17 members with VLSI expected to join soon. Nine positive responses (with no comments) to the ballot have been received. EIA World Wide Web is running. Syed Huq will work with Patti to provide an IBIS home page and also access to public IBIS information that reside outside of participating company firewalls. The home page contents have to be approved by the IBIS Committee, and must also pass EIA legal review. AR - Syed will update the reflector on IBIS home page progress. Patti will be coordinating the EDA booth at DAC96 in Las Vegas. She would like to see standards participation. She has asked for free floor space. At DAC95, CFI and EIA/EDIF payed $15K and several others put in less. She expects the cost to go down next year. A workstation with demos for IBIS would be nice. Several knowledgeable IBIS people would be needed for booth duty. GOLDEN PARSER UPDATE Will has redistributed the corrected Version 7 ibischk2 disks as Beta 7.1 We have not had a chance to give feedback yet since it was sent out originally with ramp.c missing. This is expected to be the final release. However, some additional changes based on BIRD29.1 and on completeness of the parser may necessitate additional work. S2IBIS 2.1 Kumar will make progress reports. A while ago Michael Steer had requested ibischk2 header files for code compatibility. We agreed to provide these. AR - Will Hobbs send Michael all *.h files. Update - DONE AR - Kumar provide an update next week on s2ibis 2.1 progress. COOKBOOK AND OVERVIEW UPDATE Will mentioned that this would be a good Summer project since there is much interest in IBIS Version 2.1 BIRD27 NEW KEYWORD FOR DIFFERENTIAL I/O Bob Ward will submit BIRD27.1 using comments from Bob Ross and will this will be discussed at the next meeting. This change is intended for Version 3.0. AR - Bob Ward submit BIRD27.1 BIRD28.1 PACKAGE MODEL EXTENSION Stephen Peters has just sent BIRD28.1 with changes including revised syntax and removal of the [Units] keyword. Stephen retained the [Model Data] and [End Model Data] syntax. The key difference is that the groups of pins that are intended to couple one another need to be of the same length. The matricies used to describe the coupling are described in the BIRD and are consistent with those produced by field solvers. Stephen raised the question if VCC and GND pins should be handled differently with no coupling, and the consensus was that this was not necessary nor proper. Coupling the rails should be included in the format so simulators can handle the effects. As a reality check, Stephen will post a PQFP picture and corresponding IBIS description to illustrate the application of BIRD28.1 and perhaps generate further comment. The example may be in text or Word format. AR - Stephen Peters submit an example. BIRD29.1, BANDED MATRICES As written, Version 2.1 did not permit wrap-around coupling through the banded method. At DAC95 and on the reflector, we discussed a wrap-around mechanixm by extending the bands diagonally beyond the square perimeter of the matrix far enough to match the length of the diagonal at each fringe paralleling the diagonal. Bird29.1 was approved by vote. Thjs bird would apply to the EIA IBIS Version 2.1 and is regarded as an editorial clarification and slight expansion of functionality (keeping the existing functionality). AR - Bob Ross sends to EIA this BIRD as a comment to the EIA IBIS ballot from the committee. Update: DONE AR - Will Hobbs and Bob Ross, commmunicate this change to Paul Munsey and Ron Neville as an enhancement to the ibischk2 parser project. Update: DONE PIN PROGRAMMABLE BUFFER STRENGTHS Arpad Muranyi asked whether the current IBIS syntax could include specifying multiple buffer strengths for a particular pin, and the concensus was no. Bob Ward had raised this issue at the DAC Summit meeting in February, 1995. The ibis_chk and ibischk2 utilities would not handle several models on the same [Pin] line. The current method is to supply several models and supply the appropriate comments so that the user can enter the correct model in the [Pin] table. Another solution is to have multiple [Component] files having permutations of model combinations. This would work if only a few selections are needed. Buffer strength selection exists in several devices, so the need is real. It may be nice to have an IFDEF method to dynamically select buffer levels. AR - Arpad Muranyi write up a proposal (EGG) and submit to the reflector to generate discussion. NEXT MEETING: It is set on Friday, July 21, 1995. Will Hobbs will be gone, so Jon Powell or Bob Ross will moderate. AR - Will Hobbs contact Jon Powell. Update: DONE. Jon Powell will moderate. ============================================================================== NOTES IBIS CHAIR: Will Hobbs (503) 264-4369, Fax (503) 264-4210 Will_Hobbs@ccm.jf.intel.com Modeling Manager, Intel Corp. 2111 NE 28th M/S JF1-57, Hillsboro, OR 97124 USA VICE CHAIR: Jon Powell (805) 988-8250, Fax: (805) 988-8259 JonP@qdt.com 1385 Del Norte Rd., Camarillo, CA 93010 SECRETARY: Bob Ross (503) 603-2523, fax (503) 639-3469 Bob@icx.com 10220 SW Nimbus Ave, K4, Portland, OR 97223 To become a voting member of the EIA IBIS Open Forum, send email to ibis-info@vhdl.org for instructions. If you want to join the e-mail reflector (ibis@vhdl.org), send e-mail to the IBIS secretary at ibis-request@vhdl.org. Check the pub/ibis directory on vhdl.org for more information on previous discussions and results. You can get on via ftp anonymous, "guest" login from telnet or dial-in (415-335-0110), or send an email 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. ==============================================================================