======================================================================
IBIS INTERCONNECT MODELING AD HOC TASK GROUP MEETING MINUTES AND AGENDA

http://www.eda.org/ibis/adhoc/interconnect/

Mailing list: ibis-interconn@xxxxxxxxxxxxx

======================================================================
Next Meeting
Wednesday, July 23, 2008
9 AM US Pacific Time

               Telephone     Bridge   Passcode
              916-356-2663     3      702-8064

Use the LiveMeeting Links in Outlook or the information below:

        Meeting ID:     331c8375971d448982e9769d79d4392a
        Entry Code:     YbJ990a3t52
        Location:
meet:sip:michael.mirmak@xxxxxxxxx;gruu;opaque=app:conf:focus:id:331c8375
971d448982e9769d79d4392a%3Fconf-key=YbJ990a3t52

      http://tinyurl.com/6pj3mv

Agenda:
- Call for patents
- Opens
- Touchstone 2.0 Formal Text Review

======================================================================

Minutes from July 9:

Attendees:
----------
(* denotes present)
Agilent                    - Radek Biernacki*, John Moore, Ken Wong*
Ansoft                     - Denis Soldo*
Cadence Design Systems     - Terry Jernberg*, Brad Griffin
Green Streak Programs      - Lynne Green
Hewlett-Packard            - Rob Elliott
Intel                      - Michael Mirmak*
Mentor Graphics Corp.      - John Angulo*, Vladimir Dmitriev-Zdorov*
Micron Technology          - Randy Wolff*
Sigrity                    - Sam Chitwood, Raymond Y. Chen, Tao Su, Brad
Brim*
SiSoft                     - Walter Katz*
Teraspeed Consulting Group - Bob Ross*

========================================================================
No patents were announced.   

Michael Mirmak reviewed the latest informal text proposals.  Radek
Biernacki
Suggested avoiding language of "terminations" in favor of reference
impedances.
Vladimir Dmitriev-Zdorov agreed, noting that single-ended impedances
should
be assumed for mixed-mode ports; he asked what should be done if the
single-ended impedances don't match for ports in a mixed-mode pair.  Bob
Ross
suggested that the parser flag an error.  Ken Wong agreed, and confirmed
that 
the matched impedance assumption is used in at least one proprietary
implementation.

For port vs. terminal definitions and assumptions of reference nodes,
the team agreed that this was best left to any "wrapper" around the file
and
should not be part of the file itself.  Brad Brim noted that no risk
exists from
leaving the references for data ambiguous, as the math works out
regardless of
whether all the references are shorted together or not.

Bob Ross asked whether remapping should be performed, to link
single-ended ports
together into mixed-mode ports as used in proprietary implementations.
Vladimir
noted that an example in the text would be useful with two pairs on each
side,
showing new designations.  This could even include most common
proprietary methods
then the specification-defined way.

Formal text to be provided in the next meeting.
========================================================================

Team Objectives:
1) complete ICM-IBIS linking BIRD and any associated changes to the 
   ICM specification
2) update the ICM specification, if needed, to clarify the mapping of 
   ICM nodes to S-parameter ports
3) complete a specification for "Touchstone Plus" or similar 
   industry-standard definition for Touchstone-like files, to include 
   complex impedance references, removal of limits on the maximum number
   of ports and per-port impedance references 

------------------------------------------------------------------