[SI-LIST] : IBIS User Group minutes 3/19 - In future will only be sent to

Kathy Breda (breda@nesa.com)
Wed, 08 Apr 1998 13:25:27 -0400

***Minutes of the IBIS Users Group Meeting
held at DEC/Compaq on Thursday, March 19, 1998***

Thank you to Jeff Chu of DEC who coordinate the
meeting room and refreshments. Also, thanks
to Bob Haller of DEC who chaired the meeting
in Ed Sayre's absence - a job well done! =20

Next Meeting is Scheduled for Thursday, April 23, 1998
at 3:00PM. The meeting will be hosted by Joe Socha
of TRILOGIC, Inc. in Wilmington, MA. Directions and
Agenda to Follow.

Apologies for the late distribution of the minutes.

N.B.=3D=3D>Distribution of IBIS Information<=3D=3D

To cut down the repeat messages and also e-mail sent to
uninterested parties, the IBIS business information will
be sent only to the IBIS-users@eda.com distribution list
after this point.

If you still want to receive IBIS minutes, but do not want
to subscribe to the ibis-users@eda.com list, please let me
know (breda@nesa.com)and I will create a special distribution list.

IBIS technical information, such as BIRDS may be sent
to a wider distribution list, including the SI distribution
list. =20

To be added to the IBIS distribution list send mail to ibis-request@eda.o=
See directions for this and other interesting IBIS related addresses belo=

To join, change, or drop from either the IBIS Open Forum Reflector
(ibis@eda.org), the IBIS Users' Group Reflector (ibis-users@eda.or=
or both. State your request.

To obtain general information about IBIS, to ask specific question=
for individual response, and to inquire about joining the EIA-IBIS
Open Forum as a full Member.

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.

To send a message to the IBIS Users' Group Reflector. This is=20
used mostly for IBIS clarification, current modeling issues, and
general user concerns. Job posting information is not permitted.

To report ibischk2 parser bugs. The Bug Report Form Resides on
eda.org in /pub/ibis/bugs/ibischk/bugform.txt along with reported =

To report s2ibis, s2ibis2 and s2iplt bugs, use the Bug Report Form=
which reside under eda.org in /pub/ibis/bugs/s2ibis/bugs2i.txt,=20
/pub/ibis/bugs/s2ibis2/bugs2i2.txt, & /pub/ibis/bugs/s2iplt/bugspl=

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 Accuracy Sub-Committee Progress

A proposal has been written for the IBIS Accuracy Specification.
Each member of the Accuracy sub-committee is assigned to one
part of the specification. This was presented by Greg Edlund
and details from his presentation can be found below. Please
send ideas to Greg (Greg.Edlund@digital.com) about the specification.

* Define which IBIS features and driver families to cover.
* Define different levels of accuracy so the user can decide which
is appropriate for his or her own application.

Test Loads:
* Define a minimum set of test loads appropriate for the IBIS
features and driver families covered.

Measurement Techniques:
* Provide selection criteria for test equipment.
* Describe how to account for the electrical characteristics of
the test environment.

Comparison Metrics:
* Define a curve overlay metric for use when IC processing =20
conditions are known.
* Define an envelope metric for use when IC processing conditions =20
are unknown.
* Define a tabular format for reporting the results of the above
* Write a C program which implements the above metrics and creates =20
a summary table.

The IBIS model test board has been powered up and is in debug. A board
respin will be taking place. Once the IBIS Users' Web Page is ready the=20
Gerber files and schematics will be posted.

Software Aspects of IBIS Sub-Committee Progress

Paul Galloway is leading this sub-committee and portions of his
presentation can be found below.

Need for an IBIS development kit:=20
* It sounds like the recently announced Hyperlynx =93IBIS
Development=94 Suite may cover this requirement. See 2/26/98
e-mail message from breda@nesa.com regarding how to get=20
the Hyperlynx Developer Tool Kit.

Need for enhanced s2ibis to correct issues with the existing s2ibis2:=20
* Capture issues and problems with s2ibis2 and determine what
specific features of IBIS 3.0 should be added, basically develop
a specification for the new s2ibis

* Proceed with soliciting funding by working with the IBIS Open =20
Forum and solicit member organizations for development funds and
researching available grants, etc. for development.
* Locate and schedule software development contractor for code
development of the new s2ibis utility

Action Item - Pursue funding through member organizations - Haruny Said
Action Item - Research potential availability of grants - Paul Galloway

Requirement for both a short (1 hour) "what is IBIS?" seminar:

* Material probably exists for this from several past IBIS
presentation we should leverage

Requirement for in depth course teaching IBIS model development(and usage=
* Need to develop curriculum outline and materials

Action Item - Contact Ed Sayre to move forward on development

The European Summit
* It was an interesting forum where the hot topic seemed to be=20
EMI in IBIS simulation.=20
* <KB comment> I believe copies of the presentations can be found by
going to ftp://ftp.eda.org/pub/ibis/summits/

Fabrizio Zanella is heading up the effort that focuses on the usability=20
of connector models. The IBIS connector model discussion has taken place=
in the past and was shelved, but has become a pressing industry and user=20
issue in the last one to two years. As a result, the sub-committee=20
feels that IBIS should include a defined format for connectors in IBIS 3.=

Highlights from Fabrizio's presentation follow:

Connector Models:

* The plan is to create a BIRD for the connector model - Fabrizio
was wondering if one existed already.
* Interconnect multiline models are created using EM tools that
output LRC matrices as SPICE sub circuits
* Last year connector vendors were not fully supporting IBIS. =20
They did not want to recreate multi line models
* The solution is for the sub-committee to develop a standard
format for connector and package multi line matrix model that
can be used by all simulators (avoid convergence issues)
* Plan is for the BIRD to be created this year
* Fabrizio is looking for participation of connector vendors in this ef=

Other Business

User Web Page
An outline has been created for the User Web Page by Kathy Breda and web=20
site construction is being handled by Andrew Philips. =20

A copy of the web page outline was presented and seemed to get good feedb=
Comments are appreciated and should be sent to Kathy at breda@nesa.com.

(first page:)

Welcome to the IBIS User Forum Web Page...

IBIS User Forum News - dates of next meetings...

IBIS User Forum Overview
IBIS User Meetings
Sub-Committee Activities
IBIS Tools
Useful IBIS related Links
On-line Chat

(and beyond first page:)

|----> IBIS User Forum Overview
- IBIS User Forum Mission
- IBIS User Forum Logistics (need better title)
--Who is involved (distribution list - maybe)
--sub-committees and contacts
--current projects (link to IBIS User Meetings)

- What is IBIS
--Description of IBIS
--Contacts (i.e. Link to IBIS Forum page)
|----> IBIS User Meetings
- News Item, announcing next meeting detail for
user meeting and sub-committees
- Minutes & Agendas
-- User Forum
--- by date, meeting minutes, agenda for
upcoming meeting
-- Subcommittees
--- Subcommittee on accuracy
---- by date, meeting minutes, agendas
--- Subcommittee on software aspects of IBIS
---- by date, meeting minutes, agendas

- Presentations
-- Presentations from meetings (link back to meetings)
--- Abstract with PDF and ZIP availability?
-- Other Interesting presentations
--- Abstract with PDF and ZIP availability?
|----> Sub-committee Activities
- Sub-committee on accuracy
-- Members
-- link to minutes & Agendas
-- Test Board Design
--Test board schematics
--Test board simulation files
-- Other stuff?

-- Other?

- Sub-committee on Software Aspects.... =20
-- Members
-- links to minutes & Agendas
-- Education Topics
-- Other?=20