Subject: [IBIS] Open forum minutes (02/14/03)
From: rrwolff (rrwolff@micron.com)
Date: Mon Feb 17 2003 - 14:09:27 PST
DATE: 02/17/03
SUBJECT: February 14, 2003 EIA IBIS Open Forum Meeting Minutes
VOTING MEMBERS AND 2003 PARTICIPANTS LIST:
Ansoft Corporation (Eric Bracken)
Apple Computer Kim Helliwell
Applied Simulation Technology Fred Balistreri
Cadence Design Lynne Green*
Cisco Systems Syed Huq, Val Mandruson, Hung Pham
Cypress Semiconductor (Rajesh Manapat)
Huawei Technologies (Jiang Xiang Zhong)
IBM (Pravin Patel)
Intel Corporation Stephen Peters*, Michael Mirmak*,
Arpad Muranyi*
LSI Logic Frank Gasparik*
Matsushita (Panasonic) Atsuji Ito
Mentor Graphics Bob Ross*, Ian Dodd, Guy de Burgh*,
John Angulo*, Mike Donnelly, Weston Beal
Micron Technology Randy Wolff*
Mitsubishi (Pat Hefferan)
Molex Incorporated Gus Panella
Motorola (Rick Kingen)
National Semiconductor Milt Schwartz*, Tim Coyle*
NEC Electric Corporation (Itsuki Yamada)
North East Systems Associates Edward Sayre
Philips Semiconductor (D.C. Sessions)
Quantic EMC (Mike Ventham)
Siemens (& Automotive) AG Eckhard Lenski*
Signal Integrity Software (Bob Haller), Barry Katz, Doug Burns
Sigrity Raj Raghuram
SiQual (Rob Hinz)
Texas Instruments Thomas Fisher
Teraspeed Scott McMorrow, Tom Dagostino,
Kevin Simpson
Time Domain Analysis Systems Dima Smolyansky, Steve Corey
Via Technologies (Weber Chuang)
Zuken (& Incases) (Michael Schaeder)
OTHER PARTICIPANTS IN 2003:
Brocade Frank Yuan, Yongrue Yu
Conexant Gary Felker
EMC Corporation Brian Arsenault
Fujitsu Tadashi Arai
GEIA (Chris Denham)
Hitachi ULSI Systems Kazuyoshi Shoji
Independent Kelly Green
NetLogic Microsystems Eric Hsu
Plexus Joseph Socha
Xilinx Susan Wu
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
March 7, 2003 (916) 356-2663 4 9034377
March 7, 2003 (no telephone bridge) - European IBIS Summit 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 Stephen Peters and give the reservation number and passcode.
NOTE: "AR" = Action Required.
-------------------------------- MINUTES -----------------------------------
INTRODUCTIONS AND MEETING QUORUM
Randy Wolff from Micron Technology is now serving as Secretary, taking
over from Guy de Burgh.
CALL FOR PATENTS
Stephen Peters called for any patents or pending patents related to the
IBIS Version 4.0 Standard. No companies declared a patent.
MEMBERSHIP UPDATE AND TREASURER'S REPORT
Stephen Peters reported that as of Thursday February 13, 2003 the EIA has
received eight IBIS dues payments. After the January 2003 summit, two more
invoices were sent out, bringing the total companies invoiced to 35.
REVIEW OF MINUTES AND AR'S
The minutes of January 10, 2003 were approved without comment.
The minutes for the January 27, 2003 IBIS Summit Meeting were reissued
after Arpad Muranyi provided some technical corrections in the DATA
DEPENDENT BUFFER CHARACTERISTICS section as detailed below:
1) Quote: "A re-extraction and re-scaling of the common mode
currents got rid of the undershoot, ..." should say:
"A re-extraction of the VT curves from the combined SPICE model
got rid of the undershoot, ..."
2) Quote: "Due to Miller capacitance, gate waveforms were coupling
to the outputs, and the amount of coupling was changing depending on
if the buffer was driving normal or de-emphasized data. Arpad was
able to match the final output waveforms closely with tedious fine
tuning, but he was not able to solve the DC level mismatch problem."
This should say:
"Due to Miller capacitance, the output waveforms were coupled to the
gate of the current source transistor, modulating the effective
drive strength of the buffer as a function of the buffer driving
normal or de-emphasized data. Arpad was able to improve the model's
final output waveforms with tedious fine tuning, but he was not able
to match all aspects of the edge rates and the DC level mismatch
problem."
3) The idea captured in "Arpad also pointed out that another way of
modeling on-die power and ground capacitance is to use the [series cap]
keyword between two pins." was actually someone else's. I believe Bob
Ross mentioned it first, so the credit should go to him. (I only
confirmed it).
4) There is a small spelling error in "The bottom line is that this
effect is real, it cannot be models in traditional IBIS,..."
^^^^^^
This should read: "modeled"
The revised minutes were approved without comment.
ARs will be discussed during the meeting.
MISCELLANY/ANNOUNCEMENTS
Lynne Green presented a live seminar on January 29, 2003 on IBIS Model
Validation Methodology and demonstrated a typical flow. The presentation is
available for download from the following URL:
http://www.cadencepcb.com/webinar/Modeling2/frmModeling.asp
PRESS AND WEB PAGE UPDATES
Stephen Peters reported that Syed Huq has updated the IBIS roster page with
a new entry for Brocade Communications Systems, Inc.
Bob Ross reported that the January 23, 2003 issue of EDN had IBIS mentioned
in "Automation Frees High-Speed Design", by David March, pp. 61-72 and (split
in two lines to avoid truncation):
http://www.e-insite.net/ednmag/index.asp
layout=article&stt=000&articleid=CA269865&pubdate=1%2F23%2F2003
Also, Bob mentioned that several papers at DesignCon 2003 mentioned or
discussed IBIS including "New IBIS Modeling Approaches for Internally
Terminated LVDS Buffers" by Mohammed Korany, Hazem Hegazy and Sherif
Hammad, and "Pad Capacitance Extraction Methodology for IBIS Modeling" by
Hazem Hegazy.
NEW MODELS AVAILABLE, LIBRARY UPDATE
No new models reported.
OPENS FOR NEW ISSUES
Stephen Peters requested to add BUG79 to the agenda.
INTERNATIONAL/EXTERNAL PROGRESS
- IEC 62014-3 (ICEM) Integrated Circuit Electromagnetic Model Proposal
(formerly, IEC 93/67/NP IBIS and EMC Simulation) - No report.
- JEDEC Activity Report
Lynne Green reported that she would present two short courses on
IBIS modeling at the JEDEX conference on March 24th. The URL for signup
is:
Lynne is presenting two seminars. Seminar A is entitled "An Introduction
to IBIS Models and Model Validation." Seminar B is called "IBIS Models
for High-Speed Interfaces."
The cost is $349 for members of JEDEC and $399 for non-members.
DESIGNCON2003 IBIS SUMMIT MEETING FEEDBACK
Stephen Peters asked for any comments regarding the January 27, 2003 IBIS
summit meeting held at DesignCon2003. Bob Ross remarked that there was a good
variety of papers, and though attendance was down there was still a full day
of presentations and activities.
DATE2003 EUROPEAN IBIS SUMMIT MEETING PLANNING
Bob Ross reported on the European IBIS Summit. This summit is held in
conjunction with the DATE 2003 conference in Munich Germany on Friday,
March 7, 2003. Because of travel restrictions, no one from the US has
obtained commitment to travel to Europe. Ralf Bruening and the Zuken
team (who were co-sponsors along with Siemens AG and Mentor) have
volunteered to chair the meeting and take care of much of the logistics. This
year the meeting will be held in a room at the International Congress Center
(ICM) where DATE 2003 is being held. Bob noted that participants would have
to register for the DATE 2003 conference.
The first announcement went out on January 15, 2003 and the second on
February 5, 2003.
Bob does not have a specific agenda report at this time, but Eckhard
Lenski stated that he knows of about seven possible presentations. Seven
presentation will fill the 9:00 AM to 2:00 PM meeting time. Bob expects
about 30 people. Lunch arrangements are still being worked out.
In follow-up to a question at the last teleconference, Stephen Peters has
read the EIA bylaws and determined that this meeting can be considered an
official IBIS summit meeting.
DAC2003 AND DESIGNCON2003 EAST MEETING PROPOSALS
Bob Ross mentioned that Ed Sayre is chairing a new DesignCon 2003 East
conference in Boston from June 23-25, 2003. Originally the meeting was
going to be conducted at a hotel in Boston, but it appears that the location
will be changed to a "beltway" site outside of Boston and closer to the
industrial participants. Holding a DesignCon meeting on the East coast
is partially motivated by the fact that, due to travel restrictions, the
West coast DesignCon meeting is not drawing many East coast participants.
Much of the East coast meeting will consist of the best presentations given
at the January 2003 meeting.
Ed has invited the IBIS committee to hold a meeting there as we have done
for many years at the recent DesignCon2003 in Santa Clara. Bob stated that
Barry Katz and the Signal Integrity Software team would be willing to chair
the meeting and provide some of the local support. It is also very likely
that IBIS could be an Associate Sponsor of DesignCon2003 East, thus
obtaining a meeting room and other benefits.
Normally we hold our annual officer transition meeting along with the Design
Automation Conference. This year we have tentatively scheduled this meeting
on Thursday, June 7, 2003 in Anaheim, California.
Stephen Peters asked if we should choose one location over the other, or
if we should hold two IBIS summits. Bob provided some considerations:
- Since most of the IBIS officers are based on the West coast, it is not
likely that many will get authorization to travel to the East coast.
However, the West Coast meeting may cost more money because we will have to
pay for the meeting room.
- It is to the advantage of IBIS to be geographically diverse and leverage
off of East Coast activity. We already hold an IBIS East Summit associated
with PCB East Conference in the September, October time frame.
- Finally, Bob noted that it might be possible to hold two meetings and
set up a phone line for webcasting presentations to the DesignCon2003 East
meeting. In fact some presentations at the DAC2003 IBIS Summit could be
repeated. If this was done, a full DesignCon2003 East Meeting would not
provide any significant logistical inconvenience and would still serve the
East Coast IBIS community. In fact, the West Coast folks could also
teleconference in, and the IBIS Chair could conduct the meeting.
Tim Coyle remarked that it would be good to do the East coast meeting for
those that couldn't attend DAC. Lynne Green asked about the balance of
participation between east coast and west coast. Stephen replied that
their are active IBIS participants on both coasts. Stephen also remarked
that he sees little downside to committing to the DesignCon East meeting.
After further discussion the group reached a consensus that we should
make plans to hold a summit meeting at DesignCon2003. No decision was
reached on whether or not to also have a summit at DAC. Lynne remarked
that we need to reach a decision soon so folks can start making their
travel requests.
IBIS VERSION 4.0 PARSER FUNDING AND STATUS
Stephen Peters reported that the EIA has received IBIS 4.0 parser payments
from two companies, however, six more companies have indicated that they are
processing the paperwork. In addition, Stephen reported that Atul Agarwal
has completed implementing the [Receiver Threshold]/[External Reference]
keywords and should have the [Alternate Package Models], C_comp and the
expanded V-T table limits done by mid-February.
IBIS QUALITY COMMITTEE
Lynne Green reported that the IBIS Quality Committee met on Jan 21, 2003
and again on Feb 11, 2003. They will be meeting again on Feb 25, 2003. They
are still reviewing documents.
IBIS MODEL REVIEW COMMITTEE
Lynne Green reported no new models to review.
NEW ADMINISTRATIVE ISSUES
None.
IBIS FUTURES AND CONNECTOR WORKING GROUP REPORT
Stephen Peters reported that the IBIS futures and connector working group
met February 6, 2003 and again on February 13, 2003 to resolve the issues
raised by Michael Mirmak and Kelly Green and captured at the January 2003
Summit Meeting. Stephen stated that the futures committee has made very good
progress, resolving all but three of the editorial and clarification issues.
The futures working group will meet again February 19, 2003 to resolve
these last three issues. Stephen expects the working group to issue a
revised draft 1.0 ICM specification for consideration by the full IBIS Open
Forum sometime in early March.
BIRD80.1 - Add External Reference Column to Pin Mapping Keyword
There was no further discussion, so Stephen Peters called for a vote.
A motion to accept BIRD80.1 passed unanimously.
BIRD81.1 - Clarify Usage Rule for [Pin] I/O Model Assignment
Bob Ross reported that BIRD81.1 was uploaded, adding the editorial changes to
BIRD81 that were identified in the January 10, 2003 teleconference.
Arpad Muranyi noted a typo in the 'Statement of Issues,' but there was no
discussion on the BIRD itself. Stephen Peters called for a vote, and a motion
to accept BIRD81.1 passed unanimously.
BIRD74.2 - EMI Parameters
BIRD79 - Non-linear buffer impedance (extension to C_comp)
Discussion on these BIRDS was deferred.
IBISCHK3 & BUG TRACKING STATUS
- BUG71 - Monotonic Checking for Combined I-V Tables
Bob Ross has been discussing the clarification of I-V table combinations
with Bob Haller. Further discussion was deferred until the next meeting.
- BUG74 - Missing Timing Test Load Warning Messages
Greg Edlund has updated this bug with clarification of assumed default
values for Cref, Vref, etc. Further action is postponed until the
rest of the Open Forum has had a chance to review the contents of the
bug report.
- BUG78 - Clamp Current Double Counting Test
While this bug has a test case, it is still incomplete as to the bug
specifics and how to detect the reported error. Bob Ross noted that this
bug is data specific and may be beyond the scope of what the parser can
detect. Bob proposed that unless the originator or quality committee can
suggest a test for Clamp current double counting by the next
teleconference, we should close this bug with a status of "will not fix".
- BUG79 - Parser Crashes on [Submodel Spec]
Matthew Flora submitted this bug for consideration. In brief, the issue
is that if the parser encounters an unrecognized subparameter under the
[Submodel Spec] keyword, it crashes. Matthew has identified the problem
and has submitted a solution. This bug is classified as Severe, Medium,
and Will Fix.
NEXT MEETING:
The next teleconference meeting is scheduled for March 7, 2003 from
8:00 AM to 10:00 AM Pacific time.
The next summit meeting is the European IBIS Summit Meeting on
March 7, 2003. No phone bridge or webcast is planned.
============================================================================
NOTES
IBIS CHAIR: Stephen Peters (503) 264-4108, Fax: (503) 264-1831
stephen.peters@intel.com
Senior Hardware Engineer, Intel Corporation
M/S JF4-215
2111 NE 25th Ave.
Hillsboro, OR 97124-5961
VICE CHAIR: Lynne Green (425) 788-0412, Fax: (425) 788-4289
lgreen@cadence.com
Senior Modeling Engineer, Cadence Design Systems
20 120th Ave NE, Suite 103, Bellevue, WA 98005-3016
SECRETARY: Randy Wolff (208) 363-1764, Fax: (208) 368-3475
rrwolff@micron.com
Simulation Engineer, Micron Technology, Inc.
8000 S. Federal Way
Mail Stop: 711
Boise, ID 83707-0006
LIBRARIAN: Roy Leventhal (847) 590-9398
roy.leventhal@ieee.org
Consultant, Leventhal Design and Communications
1924 North Burke Drive
Arlington Heights, Illinois 60004
WEBMASTER: Syed Huq (408) 525-3399, Fax: (408) 526-5504
shuq@cisco.com
Manager, Hardware Engineering, Cisco Systems
170 West Tasman Drive
San Jose, CA 95134-1706
POSTMASTER: John Angulo (425) 497-5077, Fax: (425) 881-1008
John_angulo@mentor.com
Development Engineer, Mentor Graphics
14715 N.E. 95th Street, Suite 200
Redmond, WA 98052
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