DATE: May 23, 1995
SUBJECT: 5/5/95 EIA IBIS Open Forum Meeting Minutes
PARTICIPANTS: (Voting members are indicated by [M].)
ARPA Randy Harr
AT&T Global Info Solutions Dave Moxley*
Anacad Steffen Rochel
Ansoft Henri Maramis
Atmel Corporation Dan Terry
Cadence Design [M] Sandeep Khanna, C. Kumar*
Cadlab Ralf Bruning
Contec [M] Dileep Divekar*
Digital Equipment Corp. Barry Katz
EIA Patty Rusher*
High Design Technology Michael Smith, Dr. Ing. Cosso
HP Palo Alto Tom Langdorf
HP EESof Karl Kachigan, Henry Wu
HyperLynx [M] Kellee Crisafulli
IBM Jay Diepenbrock, Joseph Flanigan
IBM-Motorola alliance Lynn Warriner, John Burnett
INCASES [M] Werner Rissiek, Olaf Rethmeier
Integrated Silicon Systems Eric Bracken
Intel Corporation Stephen Peters*, Don Telian, Will Hobbs*
Arpad Muranyi*, Derrick Duehren*, Tim Schreyer*
Interconnectix, Inc. [M] Bob Ross*
Intergraph Ian Dodd, David Wiens, Walter Katz
IntuSoft Charles Hymowitz
Mentor Graphics Ravender Goyal, Greg Doyle
Meta-Software Mei Wong, You-Pang Wei, John Sliney
MicroSim Arthur Wong
National Semiconductor [M] Syed Huq*, Raj Raghuraum, Atul Agarwal
NEC [M] Hiroshi Matsumoto
North Carolina State U. Steve Lipa, Michael Steer
OptEM Engineering, Inc. Benny Leveille, Ken Ehn
Pacific Numerix Paul K. U. Wang
Quad Design Jon Powell*
Quantic Labs [M] Mike Ventham
Symmetry Martin Walker
Synopsys, Logic Modeling G. Bill Lattin
Texas Instruments [M] Bob Ward
Thomson-CSF/SCTF [M] Jean Lebrun
UniCAD Canada Ltd. [M] Stephen Lum
Zuken-Redac [M] John Berrie
Zeelan Technology George Opsahl, Hiro Moriyasu
In the list above, attendees at the meeting are indicated by *.
Upcoming Meetings: The bridge numbers for future IBIS teleconferences are as
follows:
Date Bridge Number Reservation #
5/26/95 (916) 356-9999 485256
All meetings are 8:00 AM to 10:00 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.
NOTE: "AR" = Action Required.
-------------------------------- MINUTES -------------------------------------
CHECK-IN, INTROS, ANNOUNCEMENTS, TREASURE'S REPORT
There were no corrections made to last month's minutes.
There were no new participants.
The spec and a press release will go out for ballot Monday. [Update: Ballots
sent.]
NEW AGENDA ITEMS:
None.
PRESS UPDATES:
April 17 Electronic Press, older press release
April, Computer Design, big article
NEW MODELS AVAILABLE:
Derrick's mail to get models listed that aren't public got 2 good responses,
yet no actual data yet.
EIA IBIS MEMBERSHIP UPDATE:
Patti reported that there are 12 voting members, $4,700 in the bank, plus
$1,400 from our old account.
Patti will be sending out the IBIS 2.1 ballot to DAD and the roster, and some
of the JEDEC committee, as well as EDIF and DIE, hard copy.
Went through a roll call to see who should be receiving the parser as a
double-check. Contec has not received theirs, but has subscribed. [Update:
Will has now updated all recipients of the Parser.]
PROGRESS TOWARD ENLISTING NEW IC VENDORS
None.
GOLDEN PARSER 2.1 PROGRESS AND RELEASE DATE
Will polled those present to ensure everyone who should have the latest parser
(Beta4) has it. Arpad recommends that Paul fix the extra LF CRs (BIRD? ) It
is not in the parser. This would be a separate utility. [Update: Beta5 and
Beta6 have been distributed since the 5/5/95 meeting.]
Decided: We want the librarian to ensure that all files posted to ibis/models
are in UNIX LF CR notation format.
AR Jon -- Communicate this message to Michael Steer.
PLANS FOR IBIS MEETING AT DAC (JUNE 2ND - 16TH)
We will have a face-to-face meeting at DAC to elect officers and conduct other
business Thurs. 6/15/95. We decided to move the IBIS meeting to 1:00 pm to
5:00 pm. Cadence volunteered to host the meeting room for Thursday.
Topics:
Election of officers
Package Issues
Status of balloting
We discussed the possibility of creating a simple IBIS data sheet and decided
to purchase reprints of the EDN article on IBIS.
AR Derrick -- Send order info to Pattie, get 2,000 color copies (approx. $2K).
[Done]
Placards. We decided to have Jon order 40 and send the invoice to Pattie
Rusher (the IBIS Committee will pay for them). They can be used at DAC and
other future events.
EIA, VITAL, CFI, etc., are in a booth at DAC (#935). The booth theme will be
a standards roadmap. Article reprints will be available at the booth.
REV 2.1 UPDATES
o S2IBIS 2.1 No discussion.
o Cookbook No discussion.
o Overview No discussion.
DIODE TRANSIT TIMES
Diode transit time: Tim hasn't had a chance to post his work to the reflector
yet, but Jon Powell discussed his work modeling diodes via a voltage
dependence capacitance ("Semiconductor Device Modeling with Spice", by
McGraw-Hill). He found extremely good correlation between this work and Spice
simulations. He feels that in addition to the stored charge effect, the
turn-off of the diode creates an impedance discontinuity that adds to the
spike. Kumar suggests we represent this as a C/V curve, but Jon feels this is
a single number uniquely determined by the transit time, so a table is not
necessary. Both Arpad and Syed disagree, feeling there are 3 contributors to
it. Arpad described a method using a curve tracer to derive the forward
biased and reverse biased capacitance. Dileep says you need to measure the
stored charge, by forward biasing the diode for awhile, then letting it
discharge and measuring the current.
After 15 minutes of discussion, we decided to continue the discussion on the
reflector.
BIRD 26 - TAB CHARACTERS DISCOURAGED IN .IBS FILES
We do not have quorum. `Official (quorum) vote' delayed again.
BIRD 27 - NEW KEYWORD FOR DIFFERENTIAL I/O
Bob Ward not present to defend his idea. Tabled until he can comment.
EGG - TRANSMISSION LINE PACKAGE MODELS
There has been lively discussion on the reflector. Stephen gave an overview.
There is not agreement on the scope of the proposal. Jon and Kumar feel that
the approach is good, but in six months we will want to have something more
extensible, particularly for MCM or PCB type applications. Forks,
intermediate loads, etc., when there are multiple chips/loads in the package,
are a problem not addressed by the Egg. Kumar proposes using Spice
terminology, with coupled transmission lines added. Stephen suggested we call
it a "node-based description" to avoid the straight jacket of Spice. We will
continue the discussion on the reflector.
AR Kumar -- Post an EGG with your proposals and an example.
AR Stephen -- Jon did not get your package models. Please follow up.
SGML/HTML SUPPORT (WWW)
Syed volunteered to provide some materials for an IBIS WWW home page.
Suggestions: FAQ, general pointers, articles, maybe the EDN article, previous
DAC presentations. Contact Cecilia Fleming (703) 907-7554, cfleming@eia.org.
WRAP-UP, NEXT MEETING PLANS
Our next meeting is a teleconference 5/26/95.
==============================================================================
NOTES
IBIS CHAIR: Will Hobbs (503) 264-4369, Fax (503) 264-4210
Will_Hobbs@ccm.jf.intel.com
Modeling Manager, Intel Corp., Chairperson, EIA IBIS Open Forum
5200 NE Elam Young Pkwy M/S JF1-50, Hillsboro, OR 97124 USA
VICE CHAIR: Jon Powell (805) 988-8250, Fax: (805) 988-8259
JonP@qdt.com
1385 Del Norte Rd., Camarillo, CA 93010
SECRETARY: Derrick Duehren (503) 264-4299, fax (503) 264-4904
Derrick_Duehren@ccm.jf.intel.com
Intel Program Manager
To become a voting member of the EIA IBIS Open Forum, send email to
ibis-info@vhdl.org for instructions.
If you want to join the e-mail reflector (ibis@vhdl.org), send e-mail to the
IBIS secretary at ibis-request@vhdl.org.
Check the pub/ibis directory on vhdl.org for more information on previous
discussions and results. You can get on via ftp anonymous, "guest" login from
telnet or dial-in (415-335-0110), or send an email request to the automatic
archive server, archive@vhdl.org.
==============================================================================
Received on Tue May 23 10:09:52 1995
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