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:
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.
==============================================================================
Received on Tue May 13 11:15:25 1997
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