DATE: 2/20/98
SUBJECT: 2/13/98 EIA IBIS Open Forum Minutes
VOTING MEMBERS AND 1998 PARTICIPANTS LIST:
AMP (Martin Freedman)
Applied Simulation Technology Norio Matsui, Raj Raghuram*
Cadence Design & UniCAD C. Kumar, Don Telian, Patrick Riffault,
Craig Lewis, Greg Fitzgerald, Paul Galloway
Cypress (Bruce Wenniger)
Digital Equipment Corp. Jeff Chu*, Greg Edlund*, Bob Haller
Hewlett Packard
EEsof Karl Kachigan, Henry Wu
Boise Paul Gregory
High Design Technology (Razvan Ene)
HyperLynx Kellee Crisafulli, Matthew Flora*
Incases Olaf Rethmeier, Scott Jacobson
Intel Corporation Stephen Peters*, Arpad Muranyi*, Frank Kern
Columbia, SC (formerly NCR) Dave Moxley*
Mentor Graphics Mark Noneman
Interconnectix Bob Ross*
Zeelan Technology George Opsahl, Tom Dagostino
Mitsubishi Tam Cao
Motorola (Ron Werner)
National Semiconductor Syed Huq*, Cheng-Yang Kao, John Goldie,
Ikchang Song
NEC (Hiroshi Matsumoto)
Quantic EMC (Mike Ventham)
Texas Instruments Thomas Fisher, Harvey Stiegler,
Vincent Chang
Thomson-CSF/SCTF (Jean LeBrun)
Viewlogic Jon Powell, Chris Rokusek*
VeriBest Ian Dodd
VLSI Technology D.C. Sessions
Zuken-Redac (John Berrie)
OTHER PARTICIPANTS IN 1998:
Ansoft Eric Bogatin
Apple Fred Floresca, Danny Itani
Apteq Design Systems Dan FitzPatrick
Compaq Shariq Rahma
EIA Patti Rusher
EMC Fawn Engelmann
Fairchild Semiconductor Peter LaFlamme
NESA Edward Sayre, Kathy Breda
North Carolina State U. (Michael Steer)
Philips Semiconductor Todd Andersen*
Seagate Vanessa Howard
Symmetry Andy Hughes
Tektronix Nassrin Ghahyasi
Ultratest International Chris O'Connor
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
February 26, 1998 EUROPEAN EIA IBIS SUMMIT - NO BRIDGE
March 13, 1998 (916) 356-9200 5-23353 2913463
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
No new participants.
MEMBERSHIP UPDATE AND TREASURER'S REPORT
No report. Bob Ross mentioned that Patti Rusher had issued invoices to
attendees at the EIA IBIS Open Forum Meeting on January 26, 1998
REVIEW OF MINUTES AND AR'S
Bob Ross has done minor editorial spelling correction on some previous
minutes. The Mitsubishi name is corrected in the January 26, 1998 Minutes.
MISCELLANY/ANNOUNCEMENTS
Bob Ross indicated that he still plans the Majordomo conversion when he has
time. In the last few days there was intermittent ftp access to eda.org due
to a hacker attack and security hole. This has been resolved.
Matthew Flora announced that a new version of the IBIS Visual Editor will
be made available as soon as the HyperLynx system administrator uploads it.
It has minor corrections and an updated version of ibischk2+.
PRESS AND WEB PAGE UPDATES
Syed Huq reported that the Digital logo and links are on the Poster page of
the
EIA IBIS Home Page. The Model Provider Link was removed since the list is not
being maintained.
Bob Ross reported that he will present "IBIS Modeling Tips and Advances" at
the
PCB Design Conference West in Santa Clara, March 23-26, 1998.
NEW MODELS AVAILABLE, LIBRARY UPDATE
None reported.
OPENS FOR NEW ISSUES
Bob Ross on BUG23 - An Empty [Pullup], [Pulldown] with Waveform Table Crashes
Stephen Peters on the Model Review Committee
INTERNATIONAL PROGRESS
- IEC 62014-1 (IBIS Version 2.1) - Bob Ross reported that he has no new
information on the status.
- EIAJ III (I/O Interface Model for ICs) - Bob reported that the EIAJ
subcommittee plans to have a web site in early March with access to
Version 1.0 of the document, which is being translated into English.
- IBIS and EMC Simulation - Bob reported that a meeting of national experts
has been set up in Paris on Friday, February 27, 1998. Bob is the US
representative. Other national representatives are invited from England,
France, Germany, Denmark, and Italy. This meeting is conducted under
IEC TC93/WG5. The French group will make a report at the European IBIS
Summit on IBIS Models and EMC Simulation Standardization Status.
IBIS EAST MEETING
Greg Edlund reported on the IBIS User's Group meeting held Thursday, February
12, 1998 at EMC. The DesignCon EIA IBIS Summit Meeting was reviewed. Greg
also mentioned that Paul Galloway has been giving brief tutorials on IBIS
keywords. The IBIS East committee is working on establishing a Web Site
for material they are collecting. One participant suggested that a one-day
crash course on IBIS would be useful. Ed Sayre would be interested in setting
up such a course and would have others contribute to it. Stephen Peters and
others expressed interest in such a course. The next meeting is scheduled
on Thursday, March 19, 1998 for 3 PM to 5 PM.
DESIGNCON98 IBIS SUMMIT
The EIA IBIS Summit Meeting was held on Monday, January 26, 1998 at the
Santa Clara Convention Center and just before the DesignCon show. Syed Huq
reported that many of the presentations at the EIA IBIS Summit have been
uploaded on eda.org/pub/ibis/summits/jan98. The Summit was very successful
with 49 people attending and with many good presentations.
Bob Ross thanked Syed for handling the arrangements and National Semiconductor
for sponsoring the meeting.
DESIGNCON98
The DesignCon presentations on Tuesday, January 27, 1998 in the Signal
Integrity track involved IBIS model issues. These were well attended. Syed
reported that the panel on How Good are IBIS Models? turned out well. The
moderator, Jim Lipmann of EDN Magazine, did not have to ask any questions,
and the question/answer session continued even after Jim left.
Bob noted that Greg Edlund and Bob Haller of Digital (along with Mentor
Graphics for sponsoring the booth) got the best Demo Booth Award at the show.
Bob also noted that Margery Conner of the DesignCon98 committee was very
helpful in working with us and getting IBIS listed as a DesignCon98 sponsor.
DATE98 (DESIGN AUTOMATION AND TEST IN EUROPE) IBIS SUMMIT
The DATE98 Conference will be held Monday thru Thursday, February 23-26, 1998
in Paris France. Several IBIS and PCB Design related activities are
scheduled.
The DATE Conference itself is the continuation of EuroDAC (with EuroVHDL)
and ED&TC (EDAC, ETC, and EuroASIC). More information is available at:
http://www.date-conference.com
- PCB Symposium - Wednesday, February 25, 1998
Bob Ross reported that seven EDA companies (Cadence, Incases, Mentor
Graphics, VeriBest, Viewlogic, Xynetix, and Zuken-Redac) are co-sponsors of
a vender-neutral (i.e., no product promotion), informative, all-day event.
Bob outlined the currently planned program which is scheduled from 10:00 AM
to 4:00 PM:
10:00: Opening Address, Lutz Treutler of the FED
10:15: Viewlogic, Guy DeBurgh
10:45: Mentor Graphics, Bob Ross
11:15: Xynetix, Andrew Jones
11:45: Incases, Torsten Maeser and Werner Rissiek
12:15: Buffet Luncheon
1:30: VeriBest, David Weins
2:00: Cadence, Paul Galloway
2:30: Zuken-Redac, Anthony Cutler
3:00: Round Table Discussion
The Round Table Discussion will have representatives from several EDA
companies and also former EIA IBIS Open Forum Chair. Will Hobbs.
- European IBIS Summit - Thursday, February 26, 1998
Bob reported that about 41 people have signed up so far, and he is looking
for about 45 to 50. The meeting is hosted by Cadence. High Design Technology,
(HDT) and Mentor Graphics. There are about 14 possible presentations. Bob
presented a tentative schedule, and the one shown below with updates after
the meeting is still tentative. Some last minute confirmations are still
needed.
PRELIMINARY AGENDA
EUROPEAN IBIS SUMMIT MEETING
February 26, 1998
Paris, France
8:30 REFRESHMENTS
9:00 Welcome, IBIS Activities
Bob Ross, Interconnectix/Mentor Graphics, USA
9:25 IBIS Users Group
Paul Galloway, Cadence, USA
9:45 Use of IBIS in Alcatel
John Fitzpatrick, Alcatel, France
10:25 IBIS Model Development at National Semiconductor Corporation
Syed Huq, National Semiconductor, USA
10:45 BREAK
11:00 IBIS, Measurements vs Spice
Tom Dagostino, Zeelan Technology/Mentor Graphics, USA
11:30 Required IBIS Enhancements
Gerald Bannert, Siemens, Germany
12:00 Challenges in Using IBIS in High Frequency Applications
Prakash Radhakrishnan, Intel, USA
12:30 LUNCH
13:30 IBIS Models and EMC Simulation Standardization Status
Christian Marot, Siemens, France
14:00 IBIS and Radiation Analysis (Incases)
Werner Rissiek, Incases, Germany
14:30 IBIS Models for EMC and High-Frequency Devices
Razvan Ene, High Design Technology, Italy
15:15 BREAK
15:30 SI-Analysis with HSPICE Based on IBIS Behavioral Models
Bernhard Unger, Siemens, Germany
16:00 Problems in V-T Curve Modeling and Simulation
C. Kumar, Cadence, USA
16:30 BIRD42.3 Algorithm Considerations
Bob Ross, Interconnectix/Mentor Graphics, USA
16:45 GROUP DISCUSSION
Technical Comments
IBIS Usage Comments
Questions About the EIA IBIS Open Forum
Forming a European IBIS Users Group
17:00 ADJOURN
S2IBIS2
Bob Ross mentioned that the VeriBest AR for an NT version of s2ibis2 is
dropped because VeriBest cannot commit someone to do this as originally
planned. Bob asked Matthew Flora if he would check whether HyperLynx would be
interested in the doing the conversion. Bob also mentioned that another
person that may be willing to make public his implementation.
EDITING COMMITTEE
Bob Ross reported that he still plans to put an unofficial IBIS ver3_1b.ibs
update in the /pub/ibis/wip directory of eda.org to correct some editorial
errors and also to deal with the [End Electrical Description] and [End Board
Description] nomenclature inconsistency and other issues reported by Atul
Agarwal.
The BNF AR remains.
AR - Bob Ross generate and post a BNF for IBIS Version 3.0 (and IBIS Version
3.0 ratification AR).
BIRD44 - INTERPRETATION OF MIN/MAX/WEAK/STRONG DATA
Bob Ross opened the discussion on BIRD44 which was submitted just prior to
the June 1997 IBIS Summit meeting by Andy Ingraham. BIRD44 proposes
changing the min and max column headings for certain keywords to slow/weak
and fast/strong for IV tables and [Temperature Range], and also to slow and
fast for [Ramp] and Waveform tables. This would apply only to the comment
lines that are used for column headings and to any related discussion in the
Specification.
After a general discussion at the last teleconference meeting, Bob listed
options for IBIS Version 3.1 implementation. These included (1) reject (do
nothing), (2) add a note (which most did not favor), (3) adopt, (4) adopt
with revision such as standardizing on just slow/weak and strong/fast for all
of the revised headings to show correlation, and (5) adopt with a combined
syntax such as min-slow/weak, max-fast/strong for maximum consistency.
The group discussed and reviewed the options and favored pursuing (4). Bob
also wanted BIRD44 to include the additional Version 3.0 keywords and sub-
parameters that might be changed since BIRD44 was written before Version 3.0
ratification and discussed only Version 2.1 keywords and subparameters. The
committee would need agreement on how the changes apply to all of the Version
3.0 keywords and subparameters before asking for a vote.
Bob suggested that he ask the author, Andy Ingraham, to make the changes.
AR - Bob Ross request Andy Ingraham to issue BIRD44.1 with the changes noted
above. [Done]
IBISCHK2+ (VER 2.115) PROGRESS
Matthew Flora and Chris Rokusek reported that ibischk2+ Version 2.1.15
which incorporated BUG20 and BUG21 fixes was completed and its executables
were put on eda.org/pub/ibis/ibischk2+. Matthew asked Bob Ross if the DOS32
executable was posted, and Bob confirmed that it was, but forgot to send out
a notice. So the AR regarding posting ibischk2+ Version 2.1.15 was completed.
BUG22 - Empty [Rising Waveform] of [Falling Waveform] Causes Crash
BUG23 - An Empty [Pullup], [Pulldown] with Waveform Table Crashes
BUG22 and BUG23 were discussed together. Atul Agarwal reported these
crashes. Matthew Flora stated that BUG22 was similar to BUG10 and that
the fix was easy. Similarly, Chris Rokusek knew how to fix BUG23.
Bob Ross classified both these BUGs as Severe and Medium because they both
relate to ibischk2+ crashes. Bob also noted that these BUGs have appeared
in the ibischk2 Version 2.1.11 release, so they have been in the system for
a long time. Such as set of fixes would go into ibischk2+ Version 2.1.16.
Chris suggested that the executables for Version 2.1.16 be done in several
months since the process of generating executable is time consuming. Also
other new bugs may need to be corrected in this release.
However, the solutions to the problems need to be communicated to Atul to
be put into the ibischk3 code.
So the action is for Matthew to communicate the solution to BUG22 to Atul,
and Chris to communicate the solution to BUG23. Both will maintain an
updated pending ibischk2+ Version 2.1.16, but will not issue executables
at this time.
AR - Matthew Flora and Chris Rokusek communicate the fixes to Atul Agarwal
for BUG22 and BUG23. [Done]
VERSION 3.1 PARSER DEVELOPMENT
Bob Ross got commitments from Hewlett-Packard EEsof and VeriBest to join
the ibischk3 funding activity. With 12 companies that makes the per company
price $2084.
The committee by unanimous vote approved issuing $2084 invoices against the
purchase orders.
Syed Huq suggested that the two companies which already issued checks at
$2500 be handled on an individual basis - such as credit the excess against
future expenses. Bob would also approve issuing a refund, if requested.
Bob listed the twelve companies which are joining the funding effort:
Applied Simulation Technology
Cadence
Digital Equipment
Hewlett-Packard EEsof
HyperLynx
Incases
Intel
Interconnectix/Mentor Graphics
Mitsubishi Semiconductor
National Semiconductor
Viewlogic
VeriBest
Bob had no further status on the ibischk3 development and still expects
the first release in early March. Bob still expects to incorporate the
editorial corrections based on ibischk-bug@eda.org reflector activity
concerning ambiguities. One fix is to change [End Board Description] to
[End Electrical Description]. This correction would be put in the unofficial
ver3_1b.ibs document.
COOKBOOK
No report, all the ARs are carried forward.
AR - The following people have volunteered to supply examples
Steve Kaufer/Hyperlynx -- Example 1 (Version 1.1 basic model)
Arpad Muranyi - Example 2
Stephen Peters - Example 3
AR - Syed Huq. Review and expand (if necessary) Section 3.3. on "Obtaining
I/V and Switching Information via Lab Measurement".
IBIS MODEL REVIEW COMMITTEE DISCUSSION
This discussion occurred after the BIRD42.3 discussion but is listed here
as an Administrative topic. Bob Ross reviewed that the committee was formed
at the January 9, 1998 meeting. Its function was to provide IBIS model
developers feedback from EDA tool. The goal was to communicate to the IBIS
developers how the model functioned and what are some of the critical
practices and preferred options. One original option was for the IBIS
committee to create a one day IBIS model development course. However, the
committee members could not commit the time to do such a project. So the
original committee with four members was formed at the meeting, and three
more were added at the January 26, 1998 meeting.
The complete committee along with their e-mail addresses are listed below:
Matthew Flora, HyperLynx mbflora@hyperlynx.com
Bob Ross, Interconnectix/Mentor Graphics bob_ross@mentorg.com
Olaf Rethmeier, Incases orethmeier@pad.incases.com
Chris Rokusek, Viewlogic crokusek@qdt.com
Paul Galloway, Cadence pgjr@cadence.com
Ian Dodd, VeriBest idodd@veribest.com
Jon Powell, Viewlogic jonp@qdt.com
Bob asked how the committee should proceed. Chris Rokusek suggested some
method of central distribution such as a Web site where an IBIS model
developer could issue a model and it would automatically be distributed to
the committee. Matthew Flora volunteered to be the focal point for such
distribution. At this time he would distribute IBIS models to the other
members. If the company required individual company agreements, such as
NDA documents or Intel CITR documents, then this requirement would be
distributed by Matthew. This mechanism complied with Chris' intent. So
Matthew is the focal point for providing IBIS model review.
The reviewers would provide feedback directly to the model provider. The
model provider might then learn of important features needed by EDA tools
which use IBIS models. Syed Huq questioned how long the feedback would
take, and Bob stated that on a time available basis he expected the feedback
to take several days or more.
BIRD42.3 - MODELING CURRENT WAVEFORMS
Bob Ross indicated that BIRD42.3 will be discussed in presentations by
C. Kumar and by Bob at the European IBIS Summit. Bob indicated that there
are two fundamental reasons given for BIRD42.3: Data for another IBIS
processing algorithm and data for correction currents.
BIRD45 - DYNAMIC CLAMPS
Arpad Muranyi reported that he still needs to investigate incorporating the
dynamic clamp tables into the [Driver Selection] mechanism. He still needs
to work with Neven Orhanovic on this issue.
BIRD46 - RELAXATION OF SOME IBIS FILE NAME RESTRICTIONS
Matthew Flora continued the BIRD46 discussion that was started at the
January 9, 1998 meeting. BIRD46 allows the total <filename>.ibs to be
expanded to 64 characters. It is currently limited by the original DOS
convention of 8.3. So the <filename> could contain 60 characters.
A concern was raised that the DOS limitation might still exist in Windows NT
Version 3.5.1 but subsequent e-mail argued that this limitation did not
exist.
Bob Ross had stated for consistency that a change made for the .ibs files
should also apply to the .pkg and .ebd files in IBIS Version 3.0. Todd
Andersen asked where .pkg and its limit was documented. Bob found some
references in the IBIS Version 3.0 document. The other formats refer to
complying to the <filename>.ibs or <filename>.pkg or <filename>.ebd file
naming conventions. Rule 3 of the General Syntax Rules and Guidelines
Section states that the filename must not exceed 8 characters in order to
conform with DOS rules.
Arpad Murany asked if the 64 character extension would cause the [Filename]
keyword to exceed the 80 character line limit. Bob was concerned that the
[Reference Designator Map] keyword has three columns consisting of the
reference designator, the file name and component name. Since the component
name can have 20 characters, Bob suggested that <filename> be limited to
20 characters. This would give naming flexibility without encouraging
excessively long names. Greg Edlund asked if the underline character "_",
character can be used in the name, and Matthew responded that it was already
allowed.
The general action item is for Matthew Flora to take this discussion into
account and issue BIRD46.1. It is possible that BIRD46.1 will be up for
a vote at the next meeting.
AR - Matthew Flora issue BIRD44.1 to include references to the .pkg file
and .ebd file and to change the limitation from 64 total characters to
a <filename> limit of 20 characters.
NEXT MEETING:
The next meeting is the European EIA IBIS Summit in Paris, France on Monday,
February 26, 1998. No teleconference connection is planned.
The next teleconference meeting is on Friday, March 13, 1998, 8:00 A.M. to
9:55 A.M. BIRD46.1 may be scheduled for a vote.
==============================================================================
NOTES
IBIS CHAIR: Bob Ross (503) 685-0732, Fax (503) 685-4897
bob_ross@mentorg.com
Modeling Engineer, Interconnectix BU of Mentor Graphics
8005 S.W. Boeckman Road, Wilsonville, OR 97070
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
SECRETARY: Stephen Peters (503) 264-4108, Fax: (503) 264-4515
sjpeters@ichips.intel.com
Senior Hardware Engineer, Intel Corporation
M/S JF1-56
2111 NE 25th Ave.
Hillsboro, Oregon 97124-5961
LIBRARIAN: Jon Powell (805) 988-8250, Fax: (805) 988-8259
jonp@qdt.com
Senior Scientist, Viewlogic (formerly Quad Design)
1385 Del Norte Rd., Camarillo, CA 93010
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@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 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, & /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:
Check the pub/ibis directory on eda.org for more information on previous
discussions and results. You can get on via FTP anonymous.
"IBIS Spoken Here" placards are available from Jon Powell (jonp@qdt.com) for
use at trade shows.
==============================================================================
Received on Fri Feb 20 09:22:30 1998
This archive was generated by hypermail 2.1.8 : Fri Jun 03 2011 - 09:52:29 PDT