Subject: [IBIS-Users] [IBIS] Open forum minutes (10/03/03)
From: rrwolff@micron.com
Date: Thu Oct 09 2003 - 08:09:58 PDT
DATE: 10/09/03
SUBJECT: October 3, 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
Huawei Technologies (Jiang Xiang Zhong)
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)
North East Systems Associates Edward Sayre
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)
Independent Kelly Green*, Luca Giacotto
Infineon Tech AG Christian Sporrer
Marvell Semiconductor Itzik Peleg
NetLogic Microsystems Eric Hsu
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 Telephone Number Bridge # Passcode
October 21, 2003 TBD
October 24, 2003 1-916-356-2663 3 190-3009
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.
For international dial-in numbers, please contact 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, as a result of recent payments, membership
now stands at 27 organizations, with a twenty-eighth member in processing.
The new members are reflected in the membership roster on the web site
and in the list above.
Michael also provided a financial update. Based upon the data from the
GEIA for the year through the end of August, the Open Forum revenues are
approximately $2000 below budget, due to royalty revenues expected but
not received. However, the Open Forum is also approximately $1500 below
budgeted expenses for the year. An additional payment to the parser
developer to conclude work on IBISCHK4 and additional revenue from a new
membership (see above) are expected.
REVIEW OF MINUTES AND AR'S
The October 3, 2003 meeting minutes were approved without objection.
MISCELLANY/ANNOUNCEMENTS
Lynne Green announced that she and Arpad Muranyi would be presenting a
"webinar" hosted by Cadence Design Systems on October 8. The subject
is differential IBIS modeling techniques.
Bob Ross mentioned a new book, "Engineering Electromagnetic Compliance"
published by Wiley and Sons. Chapter 14 contains significant material
on IBIS modeling. More information on the book can be found at:
http://www.wiley.com/WileyCDA/WileyTitle/productCd-0780347439.html
PRESS AND WEB PAGE UPDATES
Michael Mirmak noted that Syed Huq has updated the IBIS web site to
list the new Open Forum member companies (see above).
NEW MODELS AVAILABLE, LIBRARY UPDATE
No new models received.
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
No update.
PCB EAST SUMMIT DISCUSSION
Lynne Green has distributed the third call for papers to the PCB East
IBIS Summit. Six presentations are planned: the Chair's
Report, a presentation from Timothy Coyle on their modeling
efforts and a web page proposal, an IBIS Quality Committee report
from Robert Haller, a differential buffer update from Arpad Muranyi,
and a short ICM example from Michael Mirmak. Luncheon sponsorship
is still needed, though.
The summit agenda will be published on or around October 14. Presentation
materials are due to Lynne Green and Bob Ross by Thursday, October 16.
Bob Ross has volunteered to provide format conversion services.
DESIGNCON 2004 SUMMIT DISCUSSION
Michael Mirmak reported that a new agreement for IBIS Summit support
has been received from the IEC. Discussions are planned in the immediate
future regarding whether some of the complementary items may be
traded for refreshments for the Summit participants.
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 payments from all parser sponsors have
been received by the GEIA. The parser code set will be provided
to the sponsors within a week.
A test version of IBISCHK4 is available for download:
http://www.vhdl.org/pub/ibis/ibischk4_beta
A review of the BUG reports still to be addressed was conducted
during the Technical Discussion portion of the meeting (see below).
IBIS QUALITY COMMITTEE
Bob Ross reported that meetings continue every two weeks. The
last meeting took place on September 23.
IBIS MODEL REVIEW COMMITTEE
Lynne Green reported that no new models have
been received by the committee since the last meeting.
S2IBIS3
Ambrish Varma reported that he has completed work on the
Series MOSFET code for S2IBIS3. A new release plus documentation
is being prepared.
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.
Ambrish will distribute a call for feedback on the latest code
using the reflector.
NEW ADMINISTRATIVE ISSUES
No new issues.
BIRD84: DRIVER SCHEDULE CLARIFICATIONS
Arpad Muranyi introduced BIRD84, which addresses two aspects of the
[Driver Schedule] keyword definitions in 4.0:
- subparameters of scheduled models are ignored, similarly to
c_comp
- "events" used to trigger the delays (such as Rising_off_delay, etc.)
are better defined
Due to these clarifications, [Driver Schedule] will not permit buffers
to be "overclocked" in simulation. Bob Ross added that the keyword
was never intended to permit overclocking behavior, in that all time
delays were assumed to be shorter than the clock period of the driver.
Feedback from Weston Beal has been received and may be incorporated into
a revised BIRD84.1.
IBIS ICM SPECIFICATION REVIEW
Michael Mirmak announced that the final editorial mark-up of the ICM 1.0
specification had been completed. The 1.0 specification is now
available on the IBIS web site, in Microsoft Word*, Adobe Acrobat* and
ASCII text formats.
Kelly Green announced that parser work has begun and is nearing 25%
completion. He anticipates that a beta version will be ready for testing
by the end of October. The current code is being developed under UNIX
but will be converted to ANSI C for porting to other operating systems.
Mentor Graphics has offered to compile a Sun Solaris* version, while
Cadence Design Systems will compile a Microsoft Windows* executable.
Bob Ross and Scott McMorrow of Teraspeed will provide a realistic set of
data to be used in an example model.
BIRD83: SERIES ELEMENT CLARIFICATIONS
Michael Mirmak introduced BIRD83, which addresses two aspects of the
treatment of series elements in 4.0:
- the [Series MOSFET] keyword is explicitly required before every use
of the Vds subparameter
- any use of the "function_table_groups" column under [Series Pin Mapping]
requires the presence of [Series Switch] elsewhere under that component
Bob Ross suggested that additional detail explaining exactly what text
changed from 4.0 in the new BIRD may be added in the Analysis section
at the end of the BIRD. However, a new BIRD filing is not required.
IBIS VERSION 4.1 DISCUSSION
John Angulo is completing work on a BIRD to document the proper usage
of [Ramp] data for the [External Model] keyword. The BIRD will also
clarify the use of native IBIS [Model] subparameters within
[External Model]. Although discussed in an earlier meeting, no change
to the treatment of c_comp is anticipated; it will still be optional in
[External Model] and will not be necessary or permitted under
[External Circuit].
Michael Mirmak proposed that the official "readings" of the specification
text begin at the next Open Forum meeting, with an approval vote
to be held after the third reading. BIRD83, BIRD84 and the expected
[Ramp] keyword clarification BIRD could be considered in parallel with
the readings. Lynne Green suggested that the specification text be
stable for at least two of the readings, although Bob Ross commented
that minor text changes should not prevent an immediate start to the
readings.
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/
IBISCHK4 & BUG TRACKING STATUS
The BUG reports still open are BUG68, BUG73, BUG75, BUG76, BUG78,
and BUG80. Of these, BUG80 will not be addressed in the IBISCHK4 parser
(see below) and BUG78 will not be fixed. Code to fix BUG73 has been developed
by John Angulo and provided to the developer but has not yet been included
in the latest parser code. BUG68, BUG75, and BUG76 will be checked by
their respective owners.
It is also unknown whether all the required 4.0 features have been
implemented in the new code. Michael Mirmak will confirm the BUG treatment
status and the support of 4.0 features with the parser developer. John
Angulo has accepted the AR to check the fixes in the next code release.
BUG80 - [Model Selector] and [Diff Pin] Ordering
John Angulo introduced BUG80. When a model contains a [Diff Pin] keyword
placed after a [Model Selector], errors regarding an "orphan component" and
an "orphan data line" are produced by the parser. While the parser error
messages may need to be clarified, the specification does not clearly
explain the scope of the [Diff Pin] and [Model Selector] keywords
relative to the [Component] keyword. This relationship is clarified by
the separate "tree" documents showing the IBIS keyword hierarchy.
The BUG was classified as annoying, low priority and open, but will
not be fixed in the 4.0 parser. A BIRD which either clarifies the
scope of the keywords involved or which formally incorporates the entire
tree hierarchy into the specification is being contemplated.
NEXT MEETING:
The next meeting will take place during the IBIS Summit at North East
Systems Associates on Tuesday, October 21, starting at 9 AM US Eastern Time.
A regular Open Forum teleconference has also been scheduled for October 24
from 8:00 AM to 10:00 AM Pacific Daylight Time. Votes regarding the
approval of both BIRD83 and BIRD84 are 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
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