DATE: December 12, 1996
SUBJECT: 12/06/96 EIA IBIS Open Forum Minutes
VOTING MEMBERS AND 1996 PARTICIPANTS LIST:
AMP Hank Herrmann, Tim Minnick, Russ Moser,
Ray Ziesse*, Jeff Walden*
Applied Simulation Technology Dileep Divekar*, Norio Matsui, Antonis Orphanou
(formerly Contec)
Cadence Design C. Kumar
Cypress Bruce Wenniger
Hewlett Packard, EEsof Karl Kachigan, Henry Wu
HyperLynx Kellee Crisafulli
INCASES Olaf Rethmeier*, Ralf Bruening
Intel Corporation Stephen Peters*, Will Hobbs, Arpad Muranyi*,
John Keifer, Aaron Tang, Duane Quiet,
[Donald Telian], Jim Kruchowski
Interconnectix Bob Ross*, Chris Reid
Meta-Software (Sanjay Gangal)
Mitsubushi Tam Cao, Hoang Nguyen
Motorola Ahmed Omer
National Semiconductor Syed Huq*, [Donald Snyder], Chune-Sin Yeh,
[Bill Aronson]
NCR (formerly ATT-GIS) Dave Moxley*, Richard Mellitz
NEC (Hiroshi Matsumoto),
Quad Design Jon Powell, Chris Rokusek
Quantic Laboratories Mike Ventham*
Texas Instruments Roger Cline, Ben Andresen, Sri Jandhyala,
Tareq Shahwan, Dan Phipps
Thomson-CSF/SCTF (Jean LeBrun)
UniCAD Canada Ltd. Celso Faia
Veribest Ian Dodd, David Wiens
VLSI Technology Dick Ulmer, Sung Oh, Swami Gangadharan,
Daniel Kim, Tom Dockery, D.C. Sessions,
Hrish Patel
Zuken-Redac (John Berrie)
OTHER PARTICIPANTS IN 1996:
3M Fran Hart, George Hare
Actel Scott Schlachter
Alcatel John Fitzpatrick*
Altera Vadim von Brzeski
Apteq Design System Dan FitzPatrick
Compaq Mark Leonard
Digital Equipment Corp. Jeff Chu
EIA Patti Rusher*
IC Works Eric Chen
Mentor Graphics Kim Owen
Micron Technology Brian Johnson
MicroSim Ralph Perez
Molex Gus Panella
North Carolina State U. (Michael Steer)
Oki Semiconductor Tom Chao
Philips Semiconductor Mike Magdaluyo
Rockwell Collins Thomas Thurman
S3, Inc. Sarathy Sribhashyam, Phap Duong
Seimans Nixdorf Arnaud Lacariere
Symmetry Andy Hughes
Tektronix, Inc. Brock Hannibal
TRW & Free Model Foundation Robert Harrison
VTC, Inc. Bob Ward
Zeelan Technology George Opsahl
In the list above, attendees at the meeting are indicated by *. Principle
members or other active members who have not attended are in parentheses.
Participants who have joined another organization are in square brackets.
Upcoming Meetings: The bridge numbers for future IBIS teleconferences are as
follows:
Date Bridge Number Reservation # Passcode
1/10/97 (916) 356-9200 4-35934 5448699
1/20/97 FACE TO FACE MEETING
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
Mike Ventham (an original member) from Quantic Laboratories phoned in from
England.
EIA MEMBERSHIP AND TREASURER'S REPORT
Patti Rusher indicated no change ($9,285).
MINUTES REPORT, MISC.
Scott Schlacter's name was corrected from Steve in the participants list.
MISCELLANY/ANNOUNCEMENTS
Patti Rusher announced that the Compact Model Council is joining EIA.
PRESS AND WEB PAGE UPDATES
Syed Huq reported an article to be published in Electronic Design Dec. 2, 1996
issue "Ease System Simulation with IBIS Device Models" by Syed.
NEW MODELS
None
OPENS FOR NEW ISSUES
Bob Ross on Parser Bug
Stephen Peters on Version 3.0 Goal
DESIGN SUPERCON97 IBIS SUMMIT MEETING
Syed Huq reported sending out two e-mails, one for a call for presentations
and one for details of the meeting. It is scheduled from 8 AM to 5 PM on
Monday, January 20. Breakfast and lunch are included.
AR - RSVP to Syed Huq if you plan to attend.
AR - Send Syed Huq or Bob Ross or Jon Powell the presentation idea proposal
and estimated length of time.
Bob Reported that several proposals have been received.
Syed will send out another mailing January 2, 1997.
S2IBIS2
Bob Ross reported that s2ibis2_version1.0, the first non-beta release is on
vhdl.org under /pub/ibis/s2ibis.
DAC97 PLANNING
Bob Ross initiated discussion regarding participation in Joint EDA
standards booth. Bob suggested minimum level (poster) for $2500. Dave
Moxely asked who would staff it, and Patti Rusher indicated that it would
be staffed by EDA people.
Voted that we sign the commitment letter.
AR - Bob Ross send the commitment letter to Patti Rusher.
IEC PROGRESS
Patti Rusher indicated that IBIS is being circulated internationally.
COOKBOOK for 2.1
Chris Rokusek had sent a note requesting vendors supply the best test loads
for Waveform based tables. Arpad Muranyi lead the discussion questioning
dependency base on one or two resistor loads. Dileep Divekar was concerned
that results based on 50 ohms would not be accurate at, say 80 ohms. Different
simulators may give different results based on algorithms. The nature of IBIS
models is that it has data, but the simulator algorithms determine the
operation. The discussion evolved to should simulator algorithms be
standardized? The ultimate reference is the transition characteristics of
device itself, which cannot be standardized as an algorithm for the IBIS
elements. The waveform data in a model should match the results for that
load, so the question is what are the best loads be specified? Stephen Peters
felt this is a cookbook issue concerning recommendations. Bob Ross felt
50 ohms to ground and Vcc provided the best load. One guidance would be
to use resistive loads since loads with capacitance do not give good results
in transmission line environments.
AR - Simulator Vendors send to Chris Rokusek crokusek@qdt.com the best test
loads for the simulator and a test load for validation.
PARSER BUG DISCUSSION
In response to a parser error when reserved keywords (power, gnd, nc, na)
were used as pin numbers, the parser reported an error. Syed Huq felt this
was correct, Bob Ross felt that is was incorrect and not the intent. This
problem exists both in ibis_chk for Version 1.1 and ibischk2 for Version 2.1.
After some discussion we felt this was a parser bug.
AR - Bob Ross file a parser bug report.
IBIS VERSION 3.0 RATIFICATION
Stephen Peters raised the question of whether Version 3.0 would be ratified
at the face-to-face meeting. A number of BIRDS have been approved including
Buffer selection, Package model extension, Stored Charge, Specification
enhancements. The Multi-staged switching and electrical interconnect
descriptions are pending. Arpad Muranyi would like to see quick switch
series resistance. A proposal is needed if it is to be included. After
some discussion of the logistics, the goal will be to have all of the BIRDS
for Version 3.0 approved by the face-to-face meeting.
BIRD35.2 - MULTI-STAGED OUTPUTS (VOTE)
Bob Ross introduced BIRD35.2 proposing a scheduling method for calling other
models for multi-staged output.
Bob Ross would add to the BIRD35.2 a recommendation that the golden waveform
also be included in the [Model] description from which [Driver Schedule]
is called. It could serve as a reference, although it would not be used.
This would be in the Usage Rules to produce BIRD35.3.
Arpad Muranyi has two cases sent by Jon Powell showing a compelling need for
this capability. (A 3.3V and 5V driver pair, and TTL/CMOS driver pair) Other
needs could not be discussed, but it was stressed that multi-staged switching
was embedded in driver architectures.
BIRD35.3 was approved 6 to 1 with Dileep Divekar dissenting.
We discussed whether we would approve this with dissent - first for IBIS.
We agreed to keeping this approved, but with further discussion as part of
Version 3.0 adoption.
PACKAGE COMMITTEE REPORT
Stephen Peters reported that Dileep Divekar's comments were being considered.
The syntax was focused on a single line model. It has node based descriptions.
Coupled models are under discussion.
Bob Ross indicated that coupled models would probably be too controversial
to standardize. So single ground models would be used. The focus of
the effort is to wrap up BIRD36 for reissue.
AR - Stephen Peters set up the Package Committee meeting again for Friday,
8:30 AM to 10 AM.
PARSER ADDITIONS FOR NUMERICAL CHECKING
(Not Discussed)
BIRD40 - SPECIFICATION ENHANCEMENT
Bob Ross introduced BIRD40 in response to a RAIL committee request that
the overshoot names in both IBIS and RAIL be different since they have
different definitions. The only change is Overshoot_high and Overshoot
low be changed to S_overshoot_high and S_overshoot_low. Dave Moxley had
questioned the similarity of words with different meanings at the last
IBIS meeting.
BIRD40 will be scheduled for vote at the next meeting.
NEXT MEETING:
The next meeting is on Friday, January 10, 1996, 8:00 A.M. to 9:55 A.M.
BIRD40 is scheduled for a vote.
==============================================================================
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
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.
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.
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:
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 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.
==============================================================================
Received on Thu Dec 12 15:47:38 1996
This archive was generated by hypermail 2.1.8 : Fri Jun 03 2011 - 09:52:29 PDT