Subject: [IBIS] Open forum minutes (08/22/03)
From: rrwolff@micron.com
Date: Mon Aug 25 2003 - 11:48:00 PDT
DATE: 8/25/03
SUBJECT: August 22, 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*, Lance Wang
Cisco Systems Syed Huq, Michael LaBonte,
Val Mandruson, Hung Pham,
Todd Westerhoff
Fairchild Semiconductor (Graham Connolly)
Hitachi ULSI Systems Kazuyoshi Shoji
Intel Corporation Stephen Peters*, Michael Mirmak*,
Arpad Muranyi*, Eric Magnusson
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*
Molex Incorporated Gus Panella
Motorola (Rick Kingen)
National Semiconductor [Milt Schwartz], [Tim Coyle]
NEC Electric Corporation (Itsuki Yamada)
Philips Semiconductor (D.C. Sessions), Stephanie Goedecke
Siemens (& Automotive) AG Eckhard Lenski, Michael Kindij,
Burkhard Muller, Katja Koller,
Andre Goerisch, Manfred Maurer,
Bernard Unger, Amir Motamedi,
Hartmut Ibowski, Gerald Bannert
Signal Integrity Software Bob Haller, Barry Katz, Doug Burns
Sigrity [Raj Raghuram]
Synopsys Warren Wong, Edmund Cheng
Texas Instruments Thomas Fisher
Teraspeed Scott McMorrow, Tom Dagostino,
Kevin Simpson, Bob Ross*
Time Domain Analysis Systems Dima Smolyansky, Steve Corey
Zuken (& Incases) Michael Schaeder, Ralf Bruening
OTHER PARTICIPANTS IN 2003:
Agilent Technologies Herbert Lage
Brocade Frank Yuan, Yongrue Yu
Conexant Gary Felker
EADS CCR Alix de la Villeguerin
EFM Ekkehard Miersch
EMC Corporation Brian Arsenault, John Fernandez,
Simba Julian
Fraunhofer IZM Ege Engin
Fujitsu Tadashi Arai
GEIA (Chris Denham)
Huawei Technologies (Jiang Xiang Zhong)
Independent Kelly Green, Luca Giacotto
Infineon Tech AG Christian Sporrer
Marvell Semiconductor Itzik Peleg
NetLogic Microsystems Eric Hsu
North East Systems Associates Edward Sayre
North Carolina State Univ. Ambrish Varma*
Plexus Joseph Socha
Politechnico de Torino Igor Stievano
Qlogic Larry Barnes
Sintecs BV Hans Klos, Bob te Nijenhuis
SiQual (Rob Hinz)
Sun Microsystems Tim Coyle
Via Technologies (Weber Chuang)
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
September 12, 2003 1-916-356-2663 2 890-1093
All meetings are 8:00 AM to 9:55 AM Pacific Time. Meeting agendas are
typically distributed seven days before each Open Forum. Minutes are
typically distributed within seven days of the corresponding meeting.
When calling into the meeting, provide the reservation number and
passcode at the automated prompts. If asked by an operator, please
request to join the IBIS Open Forum hosted by Michael Mirmak.
NOTE: "AR" = Action Required.
-------------------------------- MINUTES -----------------------------------
INTRODUCTIONS AND MEETING QUORUM
No new participants.
CALL FOR PATENTS
Michael Mirmak called for any patents or pending patents related to the
IBIS Version 4.0, 4.1 or ICM specifications. No patents were declared.
MEMBERSHIP UPDATE AND TREASURER'S REPORT
Michael Mirmak reported that membership remains at 25 organizations.
One invoice for membership is still in processing.
REVIEW OF MINUTES AND AR'S
The August 8, 2003 meeting minutes were approved without objection.
MISCELLANY/ANNOUNCEMENTS
No new announcements.
PRESS AND WEB PAGE UPDATES
Ambrish Varma expressed some concern regarding the posting of
S2IBIS3 executables as opposed to posting a link to them. As
the code is still under development, executables on the IBIS
web site may rapidly become stale. At present, only a link to
the S2IBIS3 page at North Carolina State is planned for the
IBIS site.
NEW MODELS AVAILABLE, LIBRARY UPDATE
Bob Ross reported that he had received three new IBIS model links
which have been forwarded to Roy Leventhal for inclusion on the
IBIS web site model library. Michael accepted the AR to confirm
with Roy his schedule for model page updates.
OPENS FOR NEW ISSUES
No new issues.
INTERNATIONAL/EXTERNAL PROGRESS
- IEC 62014-3 (ICEM) Integrated Circuit Electromagnetic Model Proposal
(formerly, IEC 93/67/NP IBIS and EMC Simulation)
No update.
- JEDEC Activity Report
Lynne Green reported that she has been invited to present a one-day
short course on IBIS and IBIS modeling during the JEDEC spring meeting.
A presentation link will be posted on the IBIS Open Forum web site.
DATE/PCB EAST SUMMIT DISCUSSION
Lynne Green has distributed a first call for papers to the PCB East
IBIS Summit. She noted that a few presentation titles and subjects have
already been forwarded to her. Michael Mirmak described his
conversation with Kathy Breda of NESA. NESA has confirmed that they
will host the IBIS Summit on Tuesday, October 21. Kathy is the
contact for summit registrations. Lynne and Michael will meet
with Kathy via teleconference before the next Open Forum to finalize
room and refreshment/lunch arrangements. Ambrish Varma indicated
that he may be able to present on S2IBIS3 development.
DESIGNCON SUMMIT DISCUSSION
Michael Mirmak reported that an updated draft contract with the IEC for
co-sponsorship of DesignCon 2004 has been received. The summit date
of Monday, Feb. 2, 2004 has been confirmed, with a room and audiovisual
equipment. However, separate refreshments continue to be a problem.
A teleconference is not anticipated.
In addition, sponsors are needed for lunches at both PCB East and
DesignCon 2004. Open Forum members and participants are encouraged to
inquire at their organizations regarding co-sponsorship of the summit.
Sponsors will be prominently mentioned in Summit presentations,
announcements, and the minutes.
IBIS VERSION 4.0 PARSER FUNDING AND STATUS
Michael Mirmak reported that payment from one parser sponsor has not
yet been confirmed by the GEIA. Only a few issues remain to be resolved
in the latest beta version of the parser (see the BUG discussion below).
Parser code from the current beta has been provided to all paid sponsors.
A beta version of IBISCHK4 is available for download:
http://www.vhdl.org/pub/ibis/ibischk4_beta
IBIS QUALITY COMMITTEE
Bob Ross reported that meetings continue every two weeks.
IBIS MODEL REVIEW COMMITTEE
Lynne Green reported that no new models have been received by the
committee since the last Open Forum meeting.
NEW ADMINISTRATIVE ISSUES
No new issues.
S2IBIS3
Ambrish Varma reported that work continues on S2IBIS3 development.
NMOS code has been completed, with PMOS work underway.
S2IBIS3 beta executables can be downloaded from:
http://www.ece.ncsu.edu/erl/ibis/s2ibis3/s2ibis3.htm
Feedback on the current beta version is appreciated and encouraged.
WEB PAGE DISCUSSION
Discussion of potential domain and format changes for the IBIS web site
was deferred until the next Open Forum meeting.
BIRD82.1 - Clarification of Clamp Tables
Lynne Green reintroduced BIRD82.1 and mentioned a change requested by
Bob Haller to the BIRD text. After discussion, the BIRD was amended
to change the opening sentence to read, "It is intended that both
[Power Clamp] and [GND Clamp] tables..."
Lynne noted that the BIRD was intended to be incorporated into IBIS 4.1.
The BIRD was approved as amended unanimously. The text will be posted
with changes as BIRD82.2.
CLARIFICATION BIRD DISCUSSION
Michael Mirmak introduced two issues related to series elements discovered
during model validation at Intel Corp. The 4.0 specification does not
clearly state whether the [Series MOSFET] keyword must be present for
each occurrence of the "Vds" subparameter and accompanying data table.
Using only one [Series MOSFET] keyword with multiple Vds subparameters
is seen as an error by the current parser. Michael proposed that this
parsing rule be made explicit in the specification. Stephen Peters and
Bob Ross noted that other keywords force multiple occurrences of keywords
with data tables; for example, [Rising Waveform] must appear for each
rising data table under the [Model] keyword.
In addition, Michael noted that the [Series Pin Mapping] keyword makes the
column function_table_groups optional, so that the operation of series
switch enables may be described. However, the use of function_table_groups
for switches implies the need for [Series Switch Groups], which the
specification describes as simply not required. Michael proposed that
[Series Switch Groups] be required if function_table_groups is used. Again,
the current parser assumes that both must be present for correctly written
series switch models. Bob Ross observed that any clarification BIRD written
to address these issues would likely be assigned as BIRD83, and should be
made as unobtrusive as possible to prevent problems approving IBIS 4.1.
IBIS VERSION 4.1 DISCUSSION
John Angulo updated the Open Forum on his work in developing an expansion
of the [Ramp] keyword, for use with the 4.1 multilingual extensions. The
task is complicated by the fact that [Ramp] carries several assumptions
regarding load termination (to what voltage is it connected) and type
(is the load single-ended, differential, etc.). In addition, the [Ramp]
keyword is frequently misused in currently available models, often
expressing a slew rate instead of the actual 20-80% voltage and
transition time required by the specification. Stephen Peters advocated
keeping the [Ramp] keyword as currently required in 4.0, but some
members noted that this would not accommodate differential technologies
properly. Bob Ross and Michael Mirmak also noted that, even with
changes to address differentials, [Ramp] would still be inadequate for
any future technologies modeled using the multilingual extensions.
John Angulo accepted the AR to defer on writing specific keyword
language. Instead, he will present the algorithmic requirements of
tools which use the [Ramp] keyword for crosstalk and timestep
analysis. These can be generalized for either a revised [Ramp] or
a new keyword by the Open Forum.
A draft version of IBIS version 4.1 is available on the web. Both an
ASCII text and an Adobe PDF version are available at:
http://www.vhdl.org/pub/ibis/wip/
IBIS ICM SPECIFICATION REVIEW
Michael Mirmak announced the second "reading" of the ICM specification
and called for comment. No comments have been received since the last
IBIS Summit. A vote on ICM approval is scheduled for Sept. 12.
IBISCHK4 & BUG TRACKING STATUS
Michael Mirmak noted that only five BUGs remain unresolved in the latest
3.2 parser and inquired about their status in the beta 4.0 parser. Of
these five, BUG68 and BUG73 have been checked using 4.0 and do not yet
appear to have been addressed. BUG75 and BUG76 require inclusion of
new parser code and checking using special compilations of the parser.
Bob Ross observed that BUG71 may not have been properly addressed in 4.0,
as the rule for non-monotonic checking which it created may not have been
clearly expressed to the parser developer. For IBIS 3.x models,
individual tables are checked for non-monotonicities. The new rule for
IBIS 4.x models involves combining tables. John Angulo noted that
there are still small, OS-dependent printing issues with the parser and
that some kinds of non-monotonic warnings appear twice in the beta.
Michael accepted the AR to communicate the state of the last five BUGs to
the parser developer and to request an update.
The beta version of IBISCHK4 is available at:
http://www.vhdl.org/pub/ibis/ibischk4_beta
BUG80 - [Model Selector] and [Diff Pin] Ordering
John Angulo introduced BUG80, which identifies that the parser observes
an implicit rule about the proper ordering of [Model Selector] with
respect to the placement of the [Pin] and [Diff Pin] keywords. No rules
regarding the placement of these keywords is explicitly described in the
specification, although one is implied by the IBIS tree hierarchy. As
the issue may be the result of a specification ambiguity, classification
of the BUG was deferred. A discussion of the ordering issue will be
placed on the agenda for the next Open Forum.
NEXT MEETING:
The next teleconference has been scheduled for September 12 from 8:00 AM
to 10:00 AM Pacific Daylight Time. A vote on the ICM specification
is scheduled.
============================================================================
NOTES
IBIS CHAIR: Michael Mirmak (916) 356-4261, Fax: (916) 377-1046
michael.mirmak@intel.com
Senior Analog Engineer, Intel Corporation
M/S FM6-45
1900 Prairie City Rd.
Folsom, CA 95630
VICE CHAIR: Lynne Green (425) 788-0412, Fax (425) 451-1871
lgreen@cadence.com
Senior Modeling Engineer, Cadence Design Systems
320 120th Ave NE, Suite B-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: 1-711
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
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:
majordomo@eda.org
In the body, for the IBIS Open Forum Reflector:
subscribe ibis <your e-mail address>
In the body, for the IBIS Users' Group Reflector:
subscribe ibis-users <your e-mail address>
Help and other commands:
help
ibis-request@eda.org
To join, change, or drop from either the IBIS Open Forum Reflector
(ibis@eda.org), the IBIS Users' Group Reflector (ibis-users@eda.org)
or both. State your request.
ibis-info@eda.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@eda.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@eda.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@eda.org
To report ibischk2/3 parser bugs. The Bug Report Form Resides on
eda.org in /pub/ibis/bugs/ibischk/bugform.txt along with reported
bugs.
To report s2ibis, s2ibis2 and s2iplt bugs, use the Bug Report Forms
which reside under eda.org in /pub/ibis/bugs/s2ibis/bugs2i.txt,
/pub/ibis/bugs/s2ibis2/bugs2i2.txt, and
/pub/ibis/bugs/s2iplt/bugsplt.txt respectively.
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:
http://www.eigroup.org/ibis/ibis.htm
Check the pub/ibis directory on eda.org for more information on previous
discussions and results. Logins using anonymous FTP are accepted.
-----------------------------------------------------------------
|For help or to subscribe/unsubscribe, email majordomo@eda.org
|with the appropriate command message(s) in the body:
|
| help
| subscribe ibis <optional e-mail address, if different>
| subscribe ibis-users <optional e-mail address, if different>
| unsubscribe ibis <optional e-mail address, if different>
| unsubscribe ibis-users <optional e-mail address, if different>
|
|or email a request to ibis-request@eda.org.
|
|IBIS reflector archives exist under:
|
| http://www.eda.org/pub/ibis/email_archive/ Recent
| http://www.eda.org/pub/ibis/users_archive/ Recent
| http://www.eda.org/pub/ibis/email/ E-mail since 1993
This archive was generated by hypermail 2b28 : Mon Aug 25 2003 - 11:53:46 PDT