Text item: Text_1
Date: March 16, 1994
From: Derrick Duehren (503) 696-4299, fax (503) 696-4904
Derrick_Duehren@ccm.jf.intel.com
Intel Program Manager
(Will Hobb's IBIS Assistant)
Intel Corporation
5200 NE Elam Young Pkwy, Hillsboro, Oregon 97124 USA
and
Will Hobbs (503) 696-4369, fax (503) 696-4210
Intel Modeling Manager
Subject: Minutes from IBIS Open Forum 3/11/94
To:
Anacad Steffen Rochel
Ansoft Henri Maramis
Atmel Corporation Dan Terry
Cadence Design Sandeep Khanna, Chris Reed,
Pawel Chadzynski, Kumar*
Contec Maah Sango*, Dermott Lynch,
Clark Cochran, Mike Venthon*
Digital Equipment Corp. Barry Katz*
High Design Technology Michael Smith
HyperLynx Steve Kaufer, Kellee Crisafulli*
IBM Jay Diepenbrock
IBM-Motorola alliance Lynn Warriner, Hoa Quoc*, John Burnett
Integrity Engineering Greg Doyle, Wayne Olhoft
Intel Corporation Stephen Peters*, Don Telian, Will Hobbs*
Arpad Muranyi, Derrick Duehren*
Interconnectix, Inc. Bob Ross*
Intergraph Ian Dodd*, David Wiens*
IntuSoft Charles Hymowitz
Logic Modeling Corp. Randy Harr
Mentor Graphics Greg Seltzer, Ravender Goyal
Meta-Software Mei Wong, Mei-Ling Wei
MicroSim Arthur Wong, Jerry Brown, Graham Bell
National Semiconductor Syed Huq*
North Carolina State U. Paul Franzon, Michael Steer, Steve Lipa*
Performance Signal Integrity Vivek Raghawan, Eric Bracken*
Quad Design Jon Powell*
Quantic Labs Mike Ventham*, Zhen Mu
Racal-Redac John Berrie
Siemens Nixdorf Werner Rissiek, Olaf Rethmeier
Texas Instruments Bob Ward*
Thomson-CSF/SCTF Jean Lebrun
Zeelan Technology Hiro Moriyasu, George Opsahl
CC:
Intel Corporation Randy Wilhelm, Jerry Budelman,
Intel IBIS team
In the list above, attendees at the 2/18/94 meeting are indicated by *
Upcoming Meetings: Date: Bridge: Res:
4/1/94 (415) 904-8944 661905
4/22/94 TBD
5/13/94 TBD
6/3/94 TBD
6/24/94 TBD
All meetings are 8:00 AM to 10:00 AM PST (16:00 to 18:00 UTC). 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 and give the bridge operator the reservation number.
Please note: If you know of someone new who wants to join the e-mail
reflector (ibis@vhdl.org) send e-mail to ibis-request@vhdl.org.
------------------------------------------------------------------------------
3/11/94 Meeting Agenda
----------------------
8:00 Check-in
Intros of new IBIS participants Hobbs
Review of 2/18/94 minutes Hobbs
Miscellany/Announcements Hobbs
Opens for new issues (reshuffle last 5 items?) All
Treasurer's Report Hobbs
Press updates Hobbs/All
Progress toward enlisting new IC vendors All
IBIS 2.0 Ratification Hobbs
- DAC Conference 6/6 - 6/10
- Steering Committee (5/20? Who? Where?)
IBIS Cookbook Hobbs
Spice-to-IBIS Converter Lipa (NCSU)
8:30 Stnd. driver, quality of support, validation Hobbs, All
BIRD 8, Spec. of V/I data monotonicity Crisafulli
BIRD 9, Other model types Ross
BIRD 2, VIH, VIL Thresholds for Inputs Powell
Egg 1, mutual pin coupling (ready to hatch?) Bracken
9:00 Simulation temperatures (new BIRD?) Warriner
Ramp measurement Reid, Ross, et. al.
Egg 2, ramp table? Hobbs
9:30 Canright paper Ward
Formal BNF notation (BIRD?) Reed, Harr
High freq. and EMI Goyal, et. al.
Phased turn-on/off of multiple devices Powell
9:55 Wrap-up, Next Meeting Plans Hobbs
Minutes
-------
1. Intros of new IBIS participants
New participants: None.
There were no corrections made to last month's minutes. Several open ARs
(attention required) are rolled into this meeting minutes.
2. Miscellany/Announcements
No new announcements.
3. Opens for new issues (reshuffle last 5 items?)
Kellee: A large number of new people are creating IBIS models. Nearly all have
put the sign in wrong in at least one of the V/I tables (both diode and pull-
up/pull-down tables). Most of the errors are simple mistakes. We need a quick
update to the IBIS check program to check for correct polarity in these tables.
Kellee then made a proposal for checking these tables and issuing a warning
message.
Jon Powell offered to change the parser, Kellee outlined how to do it. It
involves sorting the data and analyzing for polarity.
AR Kellee: Write an emergency BIRD for the change.
Approval will be attempted by the reflector within 1 week.
AR Will: Administer the voting on the emergency BIRD.
AR Jon: Make the change to the parser, once the BIRD is approved by the forum
and pass it to Will Hobbs for distribution to those who have already
paid for the parser source code. (Note: Will is uncomfortable with
posting the encrypted source to vhdl.org. Will's address is:
US Mail: Private Mail Delivery (FedEx):
Will Hobbs Will Hobbs
M/S JF1-57 M/S JF1-57
5200 NE Elam Young Pkwy 2111 NE 25th St.
Hillsboro, OR 97124 Hillsboro, OR 97124
Jon heard that the RS6000 version of Golden Parser doesn't work, but the update
is that it was cockpit error.
4. Treasurer's Report
Will has inquired with the Intel legal dept. regarding the Tax ID issue and is
waiting for a response. A check for the golden parser is pending, waiting for
the Tax ID. Another check has arrived for the GP. Will wants approval from the
buyer before mentioning who it is.
5. Press updates
In the IEEE Spectrum publication, Pg. 54 of March issue; there is an article on
managing EMI by Ravender Goyal that references IBIS and most of the
participating companies.
6. Progress toward enlisting new IC vendors
Will noted that he is seeing more IC vendors being added to the IBIS reflector.
Jon: First-try PowerPC IBIS models have been received.
Hoa Quoc: PowerPC IBIS model is available now and he can post them to vhdl.org.
AR Derrick/Randy: send instructions for posting IBIS models to vhdl.org.
Bob Ward: TI is getting closer, IBIS is a "good thing". Full buy-in should come
soon.
Syed: In process of convincing National Semiconductor upper management, but may
have to wait for 2.0 for differential support before they can implement.
Barry: Just a matter of time for Digital. The IBIS cookbook is needed.
Will: The Intel DX4(TM) processor now has a public IBIS model; also several
Intel960(TM) family IBIS models are publicly available. Will is working to get
Pentium(TM) family of processors available, but it may take a while. Will and
Derrick will be putting the new Intel models on vhdl.org. Another set of
chipset IBIS models should be coming soon.
7. IBIS 2.0 Ratification
- DAC Conference 6/6 - 6/10
After discussing the potential schedule of the conference, we decided to
have Jon and Derrick decide on the two days and post them soon so travel
plans can be made.
AR Derrick and Jon: Decide and post.
- Steering/Editing Committee (5/20? Who? Where?)
Bob Ross, Stephen, Kellee, Jon, Will, Syed volunteered to participate
May 20, in Portland, OR. It is open to anyone that enjoys editing stuff
and making it more logical and comprehensible, and wants to visit
Portland in May. The output of this committee will be posted to the
reflector for general comment and review before the DAC session, so
nothing will be final until everyone has had a chance to make their
opinions known.
AR Derrick: Make arrangements for May 20 meeting.
8. IBIS Cookbook
Intel's internal Cookbook is nearly complete. We have an Intel tech writer
(Robin R.) available for 1 week to create a generic base document from which the
forum can build. Should be avail in 4 wks. Kellee will review.
9. Spice-to-IBIS Converter
Steve Lipa: In holding mode with SPICE-to-IBIS converter because SPICE wasn't
working on Sun and RS6000 workstations until yesterday. They want to hold off
until it is tested on all major platforms. All development is done on DEC
2100's and 3100's. Steve is writing Man pages and has added all min/max tables
except ramp table. (Steve wants feedback before doing ramp table.)
AR Steve: Post the Man page drafts for forum review. (Done)
Steve has Berkeley SPICE version 3 and version 4, and has not tried any
proprietary versions (Hspice, etc.). Kellee proposed sending one of his IBIS
models to the reflector and have the forum try it for sanity check. He will
"put" the executable at \incoming on vhdl.org.
Steve needs a non-Berkeley spice simulator for IBIS model. Kellee offered to
provide one.
AR Steve: Put your IBIS output file to the reflector. Add test vectors.
Others can test it and provide feedback.
Bob Ross asked if NCSU had made any progress on the Lex/Yacc IBIS parser. Steve
said that Michael has it pretty much working. It will be posted publicly soon.
10. Stnd. driver, quality of support, validation
Agreement from last meeting: Companies will self-certify (see 2/18/94 minutes).
Old AR Will: See if Intel/Don Telian can release waveforms for the
simulations in the Overview doc. The data should end up in
Postscript format so the curves can be universally accessed.
Old AR Everyone: If, and when you self-certify (run the test suite), send email
to Derrick_Duehren@ccm.jf.intel.com so Derrick can add the
information to the Participants Roster document. Include what
IBIS version level you support.
11. BIRD 8, Spec. of V/I data monotonicity
The existing BIRD has a few limitations. Many feel it needs to be more
restrictive. Kellee is waiting to hear from others, but feels that monotonicity
should be in one axis only (voltage). Jon said that the designs that were non-
monotonic in current were abandoned because they rang too much. Many felt that
we could restrict both axes to be monotonic, because we currently don't have any
time dependency support (hysteresis or fold-back), and therefore we couldn't
model it anyway. Kumar and Maah feel we should make the one-axis restriction
conditional.
Stephen drew a picture of non-monotonic I with monotonic V (similar to below)
that looked real. Bob Ward knows of one but is not sure if he can make it
available.
| *
| * *
I | * * *
| *
| *
|______________________________
V
The Forum decided to leave monotonicity on voltage axis and call it good.
AR Kellee: Update BIRD 8 accordingly.
12. BIRD 9, Other model types
Bob Ross discussed bird 9.1. He added series and AC terminators. Discussion
indicated some confusion about whether the new model types were inside or
outside IC package (tied in with bird 2.1 questions).
Kellee: "Are we degenerating from original IBIS proposal to stay away from
trying to model resisters and capacitors?"
Bob: We need to constrain the IBIS model.
Kellee: Suggests a small modification to current model; add series resisters.
"Maybe we need building blocks that we can add together?"
Bob might create a BIRD to handle the series resistor as a separate model.
No conclusions. Continue discussion on reflector.
"IBIS is a bird that thrives in muddy waters", J. Powell.
13. BIRD 2.1 VIH, VIL Thresholds for Inputs
We briefly discussed BIRD 2.1 and noted some conflicts with the recently passed
BIRD 7.2.
AR Jon: Reconcile BIRD 2.1 with BIRD 7.2 and come out with BIRD 2.2 or a new
BIRD.
14. Egg 1, mutual pin coupling (ready to hatch?)
Not discussed.
15. Simulation temperatures (new BIRD?)
Lynn not present
16. Ramp measurement
Not discussed.
17. Egg 2 ramp table?
Will suggests this Egg. No time to discuss.
18. Canright paper
Not discussed.
19. Formal BNF notation (BIRD?)
Steve Lipa: The BNF parser from Michael Steer is working, but Steve has been
involved on other things. NCSU uses it as their parser.
20. High freq. and EMI
Not discussed.
21. Phased turn-on/off of multiple devices
Not discussed.
22. Wrap-up, Next Meeting Plans
AR Derrick: Schedule phone bridge connections for future meetings. Next is
4/1/93.
Received on Wed Mar 16 12:09:51 1994
This archive was generated by hypermail 2.1.8 : Fri Jun 03 2011 - 09:52:28 PDT