DATE: 6/23/98
SUBJECT: 6/18/98 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,
Patrick Dos Santos, Catherine Weiss,
Alain Tribaudot, Geoffrey Ellis
Cypress Bruce Wenniger*
Digital Equipment Corp. Jeff Chu, Greg Edlund, Bob Haller
Hewlett Packard (EEsof, etc.) Karl Kachigan, Henry Wu*, Paul Gregory
High Design Technology Razvan Ene
HyperLynx Kellee Crisafulli*, Matthew Flora*
Incases Olaf Rethmeier, Scott Jacobson,
Werner Rissiek
Intel Corporation Stephen Peters*, Arpad Muranyi*, Frank Kern,
Will Hobbs*, Prakash Radhakrishnan,
Mohammed Hawana*, Martin Chang*
Columbia, SC (formerly NCR) Dave Moxley
Mentor Graphics (Zeelan, Bob Ross*, George Opsahl, Mark Noneman,
Interconnectix, etc.) Tom Dagostino, Karine Loudet, Jean Oudinot,
Manuel De Almeida, Stephane Rousseau,
Neven Orhanovic*, Mohamed Mahmoud*
Mitsubishi Hoang Nguyen, Tam Cao
Motorola (Ron Werner)
National Semiconductor Syed Huq*, Cheng-Yang Kao, John Goldie,
Ikchang Song
North East Systems Associates Edward Sayre, Kathy Breda
(NESA)
NEC (Hiroshi Matsumoto)
Quantic EMC (Mike Ventham)
Symbios Larry Barnes*
Texas Instruments Thomas Fisher, Harvey Stiegler,
Vincent Chang, Jean-Claude Perrin,
Peter Forstner
Thomson-CSF Jean-Marc Claveau, Laurent Duzaic,
Saverio Lerose, Benoit Meyniel,
Jean Lefebvre
Viewlogic Jon Powell, Chris Rokusek*, Guy de Burgh,
Gary Mandel
VeriBest Ian Dodd*, David Weins, Ian Gabbitas
VLSI Technology D.C. Sessions*
Zuken-Redac (John Berrie)
OTHER PARTICIPANTS IN 1998:
Actel Eric Tardif, Emmonvelle Gaudin
Aerospatiale Lionel Dreux, Claude Huet
Alcatel (Bell, Espace, etc.) John Fitzpatrick, W. Temmerman,
Laure Bessettes, Jean-Claude Pourtau,
Daniel Peron
ALS Design Yves Mouquet
Ansoft Eric Bogatin
Apple Fred Floresca, Danny Itani
Apteq Design Systems Dan FitzPatrick
Atmel Ali Baktashian*
Avanti Nik Bannov*
CERN Olivier Clere, Jean-Michel Sainson,
Rudi Zurbroken
Compaq Shariq Rahma
Crucial Technology Rathna Reddy
EIA Patti Rusher*
EMC Fawn Engelmann, Fabrizio Zanella
ENST, Paris Jean-Jacques Charlot
European CAD Standardization Adam Morawiec
Intitiative (ECSI)
Fairchild Semiconductor Peter LaFlamme
H.A.S Electronics Haruny Said
IBM Richard Steinle*, Kevin Jackson*
Intracon Design Ltd. Derek Laidlaw
Philips Semiconductor Todd Andersen
Scottish Electronics Robert Easson
Manufacturing Center (SEMC)
Seagate Vanessa Howard
SGS-Thomson Philippe Lefevre
Siemens Gerald Bannert, Bernhard Unger,
Christian Marot, Miguel Hernandez,
Gil Russell
Sun Microsystems Lam Dong*, Kevin Ko*
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
July 17, 1998 (916) 356-9200 6-57211 5683488
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
The meeting was held all day at the Marriott Hotel, San Francisco, California.
Bob Ross opened the meeting and everyone introduced themselves. The meeting
attracted 26 people from 14 organizations with a good representation from
semiconductor vendors, EDA tool vendors and users. Atmel, Cypress, Sun, and
IBM had new attendees for 1998.
Note that several presentations were given, and some of these will be
uploaded to eda.org under /pub/ibis/summits/june98.
Bob noted that the meeting would start with business and then continue with
presentations and technical discussions. A number of BIRDs would be
discussed in order to achieve general consensus so they could be voted on
at the next meeting.
IBIS 1997-1998 REVIEW - Bob Ross (Mentor Graphics)
Bob Ross gave a summary of the activities for the year from June 1997 to the
present. The interest in IBIS has become widespread with many IBIS models
supplied by semiconductor and commercial vendors. Bob showed some
participation numbers and linkages with IBIS from other organizations. Bob
concluded that the main work continues toward Version 3.1 closure and ibischk3
completion.
(This presentation will be uploaded to eda.org.)
ELECTION OF OFFICERS (1998-1999)
Bob Ross called for nominations. After several nominations and discussions
of positions, D.C, Sessions moved that the following slate be elected by
acclimation. This was seconded and the following slate was approved.
Chair: Bob Ross, Interconnectix B.U., Mentor Graphics
Vice-Chair: Stephen Peters, Intel Corporation
Secretary: Matthew Flora, HyperLynx, Inc.
Librarian: Jon Powell, Viewlogic
Patti Rusher presented recognition plaques with the new IBIS logos to last
years officers: Jon Powell, Librarian, Stephen Peters, Secretary, Syed Huq,
Vice-Chair, and Bob Ross, Chair. Syed plans to continuing managing the
EIA/IBIS Web Site.
(Added Note: Bob thanks Syed for his outstanding service as Vice-Chair to the
EIA IBIS Open Forum and for promoting IBIS internally at National. Also, Bob
thanks Stephen for supplying the EIA IBIS Open Forum Fact Sheet for the EIA
booth at the Design Automation Conference (DAC). Finally, Bob thanks Patti
for developing the large IBIS poster for the EIA booth (with a high
resolution per IBIS logo) and for handling the EIA IBIS Open Forum meeting
arrangements including the outstanding lunch.)
OPENS FOR NEW ISSUES (Some during the meeting)
Will Hobbs on IBIS Evolution and Adoption (presentation)
Will Hobbs on actual processes, parser, timeline
Will Hobbs on Version 4.0 needs
Will Hobbs on EDA Tool Support for Version 3.1
Chris Rokusek on ibischk2+ Version 2.1.16 executables
Kellee Chrisafulli on Connector Model Status
D.C. Sessions on SSO Considerations - (ad hoc presentation)
IBIS MODEL VALIDATION ON LINUX - Syed Huq (National Semiconductor)
Syed Huq shared his experiences using the Linux operating system on personal
computers. This operating system is attractive because it -- along with
various support utilities -- are free. As part of IBIS model validation,
Syed listed these steps: Visual Inspection, s2iplt, Parser Inspection, and
Simulation. IBIS tools can be made available on Linux. Syed will make
available the ibischk2+ Version 2.1.15, and s2ibis2 utilities. s2iplt can
be installed by simply changing the perl path to /usr/bin/perl.
Simulators need to be compiled on Linux to complete the task.
(This presentation will be uploaded to eda.org.)
AR - Syed Huq provide Linux executables for uploading to eda.org [DONE]
SIMULATION TOOL ENHANCEMENTS - Arpad Muranyi (Intel)
Arpad Muranyi noted that new problems arise from fast buses. Interconnect
delays are a major part of the bus clock cycle time. Reflections, cross
talk, SSO noise, ring back, ring, etc. can significantly alter interconnect
delays. Arpad noted that RAMBUS and AGP architectures are source-
synchronous, making skews the most relevant factor. Source-synchronous
architecture (where the clock and signal are initiated from the same chip)
require only that the delays be matched and the skews be minimized. A large
number of simulations are required to deal with length variations, cross
talk effects and load mismatch, and these simulations need to be automated.
Arpad advocates flexible simulator architectures that supports batch mode
operation and can be controlled by its own programming language. Arpad
also supports better graphical display for parameter interaction and
statistical plotting of Monte Carlo data. A number of examples including
a 3-D presentations illustrated this.
Arpad also presented some flight time measurement considerations. The
test load for which Tco is based is different than the actual load - a
source of uncertainty. The tester slope method of specification at the
receiver (usually 1 V/ns) is used to refine the limits. Slower waveforms
at the receiver can create setup violations or conservative flight times.
measurement enhancements. Arpad suggested a method to measure flight time
using the slope specification.
(This presentation may be uploaded to eda.org.)
A short discussion followed this presentation, in which Larry Barnes
mentioned a presentation from the uWave symposium on doing simulation in
the frequency domain. This is supposed to yield faster results. D.C.
Sessions also commented that if source synchronous clocking is to become
the norm, the industry needed a better/more realistic way to spec input
thresholds.
IBIS EVOLUTION AND ADOPTION (New Presentation) - Will Hobbs (Intel)
Will Hobbs also supported the notion that models and simulators must keep
up with technological advances. Models need to be comprehensive and
include some subtle effects. Finally, Will advocates releasing IBIS
Version 3.1 along with its parser as soon as possible. The development
has already taken too long. The committee needs to clarify that EIA
supports semiconductor vendors releasing Version 3.1 level IBIS models.
Will showed a case study of real problem where a glitch was due to a
combination of effects. These effects included SSO interactions for
specific patterns, coincident reflections, and noise margin erosion
associated with termination plane noise, routing topology, package routing,
Vcc bypassing, connector inductance, and sub-optimal ground return path.
Will questioned whether behavioral simulation has reached its limits.
If not, then the IBIS needs to push its limits to address emerging needs
and concerns.
EDA TOOL SUPPORT FOR VERSION 3.1 (New Item)
Bob asked the EDA Tool vendors to state what there support plans were for
Version 3.1 of IBIS. The responses ranged from future commitment to support
the features of IBIS Version 3.1 to actual support being phased in.
A discussion followed on the 'chicken and egg' problem of new models
and simulators. Mohammed Hawana (Intel) stated that the simulation
tools are needed before models are released. Stephen Peters (Intel)
and Kellee Crisafulli (Hyperlynx) both countered that for technical and
business reasons models must be made available before tools vendors will
commit to supporting new IBIS features.
BIRD46.1 - RELAXATION OF SOME IBIS FILE NAME RESTRICTIONS
Bob Ross summarized BIRD46.1 changing the maximum number of characters in a
file name from 8 to 20 characters for .ibs, .pkg, and .ebd file names. This
had been discussed at the previous meeting and everyone had supported this
change. Bob called for a vote.
BIRD46.1 was approved without objections.
BIRD48.3 - ADD SUBMODEL
BIRD49.2 - ADD SUBMODEL DYNAMIC CLAMPS
BIRD50.2 - ADD SUBMODEL BUS HOLD
Bob Ross started the discussion by indicating that he prepared a draft of
these BIRDs, but did not send them out on the reflector since many IBIS
individuals would out that week at DAC. Instead, Bob presented some examples
of how the BIRDs would be implemented.
The first example showed the new syntax using the [Add Submodel] keyword
under the [Model]. The second column showed submodes 'Non-Driving' and
'All' (in place of the reserved word 'NA'). The functionality of the
referenced submodels would be added to the top-level models from which
the submodels were called.
The submodel for dynamic clamp operation was illustrated for the Triggered,
Static, and Clocked modes. The added submodel adds additional power or
ground clamps using the [POWER Clamp] and [GND Clamp] keywords. The
Triggered mode showed both the appropriate trigger subparameters and the
pulse tables. The static mode showed the exclusion of the pulse table. The
clocked mode showed the pulse table, but no trigger subparameters. All
examples showed a [Voltage Range] keyword. Bob noted that the Clocked mode
was controversial. It could only be modeled properly by introducing timing
details with the IBIS format - a direction beyond the scope of IBIS. The
actual clocked delays would have to be made relative to a separate clock
during simulation, and the delays controlled individually for each instance
of the model in a net. Arpad Muranyi noted that this was a real operation.
However, it could be approximated using the Triggered mode with some hard
work. In order to move forward, Bob proposed that the Clocked mode would
not be included in the dynamic clamp proposal. The mode or a better
solution, if found could be added later.
Bob then illustrated the bus hold operation with [Pullup] and [Pulldown]
keywords and a [Ramp]. Bob elaborated that while the bus hold structure
was described, the syntax was also appropriate for other stronger
termination schemes that were being developed. D.C. Sessions noted that
this was an active latching scheme. In practice a variation with two
trigger voltages was possible on a single transition. For a rising
transition, the first trigger would turn off the pulldown transistor to
put the submodel in a 3-state mode, and then the second trigger would
turn on the pullup transistor. However, D.C. stated that the trigger
levels (often spread on a 1/3 Vcc and 2/3 Vcc levels) were not significant
and one approximation level was adequate. Arpad Muranyi noted that the
functionality could be used for active termination. However, the group
supported that the 'bus hold' name was still appropriate since it was a
recognized feature in digital devices.
In the discussion that followed, Bob listed some Add Submodel issues. These
were discussed and the following changes were made:
(1) [Add Submodel] could be called from Terminator models. D.C. noted that
dynamic terminators were a reality.
(2) The submodel mode entry changed from 'NA' to 'All'.
(3) The [Voltage Range], [Temperature Range] and reference voltage entries
are inherited from the top-level model. These keywords are not allowed
in a submodel. This avoids the confusion of which entry takes precedence.
(The keywords could be entered in as comments to document the voltage
references that are assumed within the submodel). This reduces the
allowed keywords for a submodel to be [GND Clamp], [POWER Clamp],
[Pullup], [Pulldown], [Ramp], [Rising Waveform], [Falling Waveform],
and the new keywords for submodel.
(4) C_comp is not defined for a submodel. This avoids the problem of deciding
whether (scattered) submodel entry values are added to the top-level
C_comp (and if the mode of operation is a concern).
(5) Keywords that are not meaningful for the particular application (for
example, the [Pullup] and [Pulldown] keywords for Dynamic_clamp submodel
type) would be ignored - similar to how keywords under [Model] are
handled. This was mentioned, but not fully described at the meeting.
(6) Clocked mode would not be included for dynamic clamps.
AR - Bob Ross generate revised BIRD48.4, BIRD49.3, and BIRD50.3 with the
above changes included [Done].
AR - Bob Ross upload example files for the above BIRDs.
BIRD42.3 - MODELING CURRENT WAVEFORMS
Bob Ross introduced BIRD42.3. Several people still questioned whether the
additional current tables provided enough valuable information to justify
their inclusion. D.C. Sessions is still requesting a real test case showing
that BIRD42.3 gives useful information beyond the existing two voltage
method. Since we need to decide on this functionality soon, Bob is putting
BIRD42.3 for a vote at the next meeting.
ACTIVITIES OF EIAJ IMIC STANDARD
- Norio Matsui (Applied Simulation Technology)
Norio Matsui provided a comprehensive update on the progress of the
Electronic Industries Association of Japan (EIAJ) activity on behalf of the
I/O Interface Model Project Group and the Electrical Characterization of
Semiconductor Packages Project Group.
Norio illustrated the need and basic ideas under the Interface Model for
Integrated Circuit (IMIC) document. The need is to deal with signal
integrity (SI), power integrity (PI) and electromagnetic interference (EMI)
issues. The IMIC approach is to consider power and ground plane modeling
using a network description, and a table description for devices extended
from Berkeley Spice. This approach allows flexible equivalent circuitry for
all types of devices without revealing proprietary information. Spice to
IMIC converters are under development. Also IMIC to IBIS conversion is
planned.
Norio listed the participants in Project and Package Groups and noted that
Version 1.1 of IMIC has been released. The home pages are listed:
http://tsc.eiaj.or.jp
http://www.eiaj.or.jp
Norio showed good correlation with HSpice analysis and IMIC analysis for a
48 pin transceiver model with coupled package model pins.
Based on existing density trends, Norio sees packages complexity increasing
with the number of pins approaching 10,000 around year 2000.
New activities for 1998 include continued evaluation (IMIC vs HSpice, IBIS,
and measurement), improved modeling technology (slew rate control, current
flow from Vcc to GND), EMI model, IMIC to IBIS conversion, and more examples
of packages including a power and ground model.
CONNECTOR MODELING STATUS (New Item)
As a new item Kellee Chrisafulli reviewed the IBIS Users Group connector
model standardization. Kellee indicated that the group is headed by Fabrizio
Zanella of EMC and consists of participants from Molex, Teradyne, Berg,
Ansoft, and Hyperlynx. The goal is to provide a format that can work with
Spice and Field solver applications. Kellee listed a number of points under
discussion (without elaboration). The committee is considering (series)
cascaded L/R/C sections with coupling using a matrix format. The connector
vendors want maximum bandwidth (minimum risetime) information such that EDA
simulators will issue soft warnings if the limits are exceeded. The sections
sections can be extracted from 2-D or 3-D solvers, or by other methods
such as by LCZ or TDR measurements, with or without an external reference.
Partial or loop inductances can be formatted.
Kellee invited others to participate in the weekly discussions.
SSO CONSIDERATIONS (Ad hoc Presentation) - D.C. Sessions (VLSI Technology)
D.C. Sessions sketched and showed the equations for estimating SSO effects on
timing measurements. His example derived from a real situation showed that
SSO effects for an 8:1:1 I/O:PWR:GND ration would generate a 1.33ns time
constant to 63% value. For a .35u design he showed that the Tco(max) number
90% changed from 1.9ns without considering SSO to 3.0ns considering SSO -
30% of the cycle time.
D.C. noted that currently customers must deal with this the hard way. s2ibis
can be used to generate a best case model with no supply inductance for hold
analysis. s2ibis can also be used to generate waveforms with SSO power and
ground inductance (single values multiplied by the number of switching
stages) to get degraded waveforms. However, he consider this to be a
kludge. D.C finished his presentation by emphasizing the the various
simulation tools need better support for SSO type simulations.
(This presentation will be uploaded to eda.org.)
VERSION 3.1/3.2 AND IBISCHK3 RELEASE PLANS (With Some New Items)
As a result of the expressed need to get both IBIS Version 3.1 and the
ibischk3 parser ratified as soon as possible, Bob Ross outlined the following
plan for discussion:
The development of the IBISCHK2 parser is effectively done. We will
vote at the next meeting to close (freeze) this effort.
Ratify IBIS Version 3.1 as just a Version 3.0 editorial upgrade consistent
with the ibischk3 parser work to date. No recent enhancement BIRD would
be included since that would result in a parser turn. Focus on cleaning
up some specification technical and editorial issues. This could be done
by the next meeting.
Ratify the ibischk3 parser at the next meeting. Atul Agarwal is ready to
send ibischk3 Version 3.0.2 immediately after Bob reports back to him on
some questions. All the issues raised so far should be resolved. The
ibischk3 portion should be in excellent shape. The ebdchk3 should also have
all problems and questions resolved, but we should learn more as we get
experience with real test cases. The released parser will be designated
ibischk3 Version 3.1.0. Bob noted that this release should have one
executable with the EBD checking initiated with the -ebd flag.
Move the new enhancement BIRDs in to an IBIS Version 3.2 release and to make
the corresponding ibischk3 Version 3.2.0 with the new features. Expect to
make the release as soon as possible and before the end of the year.
The technical features moved to the Version 3.2 release are:
BIRD51 - 3-state_ECL Model Type
BIRD46.1 - 20 Character File Name Extension
BIRD48-50 - Add Submodel Extension
BIRD42.3 - Current Tables (if ratified)
Any others that are immediately processed
Bob discussed some technical questions that were raised by Atul during the
development of the ibischk3 and ebdchk3 parser. Technically BIRDs would
need to be generated to resolve these details. However, the next version
of the IBIS document would include the committee decisions. These issues
were discussed:
(1) The pin length name is five characters for the [Pin] keyword and
eight characters for the [Pin List] keyword for EBD files. The ebdchk3
parser currently test for a five character limit only per some early
advice. The committee resolved to keep the Specification as is and
to ask for a change in the parser code. [The change will be done].
(2) There are some restrictions on the order of certain keywords that are
assumed in ibischk3 and ebdchk3 testing. For example, the keywords
giving the number of entries and list order are presumed to come before
the actual lists. This needs to be documented. The committee resolved
to accept these practical restrictions and just document them as
editorial additions.
(3) For EBD files, Fork and Endfork must be on separate lines to avoid some
ambiguity in detecting some error conditions. (This would not be
needed if the other syntax is correct.) The committee accepted this
as an editorial change.
(4) Similarly, for EBD files the section sequence 'Len = ... /' must all
be on one line to avoid some ambiguity in testing for errors. This
restriction was also accepted and will be included as an editorial
change.
(5) As an editorial note, the reserved word 'NC' needs to be listed along
with the subparameters as entries for EBD files. It is currently
buried in the description. This can be done as an editorial change.
(6) The length limit of the reference designator was not given. The
existing parser sets the limit to five characters based on an early
recommendation. However, Bob recommended this be specified as ten
characters. This was discussed along with the fact that the reference
designator syntax is standardized. Ten characters would allow the
multiple board numbering systems with the first set of characters to
correspond do different boards. Ten characters would also work with
the just approved BIRD46.1 extending the file name limit to twenty
characters. This change was approved. [The parser will be changed.]
(7) Bob asked whether the maximum number of Vgs optional tables under
the [Series MOSFET] keyword needs to be specified. Currently the limit
is set to a very high value of 100. This will be entered, if needed
into the Specification.
(8) While the [Series MOSFET] keyword was never intended to be used for the
[Off] condition, this was never prohibited. The document will not
prohibit this usage, nor will the parser test for this.
(9) BIRD52 - [Driver Schedule] Clarifications: Bob noted that this is
really an editorial BIRD that states that [Driver Schedule] is located
under the [Model] keyword. Bob expects the substance of BIRD52 to be
added to the document.
Also, the comment that an example is needed will be addressed. So Bob
plans to have BIRD52 voted on at the next meeting.
(10) Matthew Flora added that the [Pin] subparameters R_pin, L_pin and
C_pin can be in any order according to the parser tests. This was
not clear in the document. This note can be added.
As part of the closure and completion of the BIRDs, Bob will generate
example files showing how the new BIRDs would be implemented. These will
provide more test cases for parser development. In particular, BIRD48-50
and the [Driver Schedule] keywords will be illustrated.
AR - Bob Ross develop and upload example files for the Version 3.1 and
Version 3.2 IBIS features.
Regarding Editorial Completion, Stephen Peters volunteered to help in this
process. Bob and Matthew will join. Anyone else is welcome. We many need
to meet for a day or so to go over some details.
BIRD44 - Interpretation of min/max/weak/strong Data: Bob indicated that
BIRD44 needs to be closed. No progress has occurred, and the specification
has advanced so that it may need to be reconstructed. Bob will put it for
a vote at the next meeting.
To summarize, the plan is to resolve all of the open BIRDs at the next
meeting, to generate a draft Version 3.1 (and Version 3.1e file) for review
and for voting at the next meeting, to get the latest Version 3.0.2 parser
code (to be sent shortly) for review, and to ratify it as the Version 3.1.0
parser at the next meeting. Work will then continue to include the new
features in a Version 3.2 IBIS release and a corresponding Version 3.2.0
parser release.
AR - Bob Ross upload the Version 3.1e and draft Version 3.1 IBIS document
for review.
IBISCHK2+ PARSER PLANS (New Item)
Chris Rokusek asked what the plans were for ibischk2+. Bob Ross suggested
that one final release be generated with all the fixes that could be done
against existing BUGs. This would be incorporated in ibischk2+ and also
in ibischk3. From that point on only ibischk3 would be maintained. Note,
the ibischk2+ code is included in ibischk3. (Atul Agarwal advises Bob that
the approved BUG fixes through BUG28 are included in ibischk3 and the
ibischk2+ portion of ibischk3.)
IBIS VERSION 4.0 FEATURES
Before adjourning, the group listed a number of IBIS model and simulation
features that might be candidates for IBIS Version 4.0. This generated
some discussion. The features are listed without comment or clarification:
(1) Better Input Characterization, also Variable Capacitance
(2) Package Model for SSO
(3) Supply Distribution Beyond [Pin Mapping]
(4) Lead Coupling in Package Group (large K factors)
(5) Interface to Structural Models
(6) Interface to Equation Description
(7) IBIS Models Invoke External Executable (OMI Interface)
(8) Connector Models
(9) Die in Multiple Packages
(10) Package Model Extensions for Coupling
NEXT MEETING:
The next meeting will be on Friday, July 17, 1998 from 8:00 AM to 10:00 AM.
Votes are scheduled on the BIRD42.3, BIRD44, BIRD48.4, BIRD49.3, BIRD50.3,
and BIRD52.1. Also a ratification vote is scheduled on IBIS Version 3.1.
The acceptance of the ibischk3 parser will be put to a vote. Stephen Peters
will conduct the meeting since Bob will be on vacation.
==============================================================================
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: 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
SECRETARY: Matthew Flora (425) 869-2320, Fax: (425) 881-1008
mbflora@hyperlynx.com
Senior Engineer, HyperLynx, Inc.
17641 NE 67th Court
Redmond, WA 98052
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.
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Received on Mon Jun 29 10:35:04 1998
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