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 Ho*
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
PC Products 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.
==============================================================================
Received on Fri Jul 7 13:59:32 1995
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