From: ibis-interconn-bounce@freelists.org on behalf of Mirmak, Michael
[michael.mirmak@intel.com]
Sent: Tuesday, August 12, 2008 10:30 PM
To: ibis-interconn@freelists.org
Subject: [ibis-interconn] IBIS Ad Hoc Interconnect Task Group Aug. 6
Minutes and Aug. 13 Reminder


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IBIS INTERCONNECT MODELING AD HOC TASK GROUP MEETING MINUTES AND AGENDA

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

Mailing list: ibis-interconn@freelists.org

======================================================================
Next Meeting
Wednesday, August 13, 2008
9 AM US Pacific Time

               Telephone     Bridge   Passcode
              916-356-2663     3      412-4364

Use the LiveMeeting Links in Outlook or the information below:
        Meeting ID:     ece2969ea66a4c16a49e84f51e7e4d7e
        Entry Code:     T37oOk2Cw
        Location:       meet:sip:michael.mirmak@intel.com;gruu;opaque=app:conf:focus:id:ece2969ea66a4c16a49e84f51e7e4d7e%3Fconf-key=T37oOk2Cw

        http://tinyurl.com/6ot83w

Agenda:
- Call for patents
- Opens
- Mixed-mode Conversion Document Review (V. Dmitriev-Zdorov)

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

Minutes from August 6:

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.

The team reviewed the draft text of the full Touchstone 2.0 specification.

Bob suggested that "mixed-mode" use upper case lettering after the hyphen.
Radek also suggested that the sentence beginning with "A differential port"
may be moved to the start of the mixed-mode section later in the document.

Walter inquired whether the exclamation point (!) is always a comment character.
If so, some tools might encounter issues with node names containing exclamation points.
Bob noted that a comment character keyword may be added in the future.  This topic
will be discussed in a future meeting.

The [Mixed-mode Order] keyword requires some changes to the options data noted in
the examples.  Bob asked whether [Two-Port Data Order] and mixed-mode data can be
Used together.  Radek noted that the fundamental problem is that two methods of specifying
data ordering are supported by the specification.  The team agreed that the
mixed-mode data format is arbitrary and explicit, so the [Two-Port Data Order] keyword
should not an issue; it may be ignored.  Vladimir added that [Two-Port Data Order]
isn't required for lower- or upper-half formats either.  Michael will add a node on the
relationship between mixed-mode and matrix upper- and lower-half formats.

Radek asked whether a statement should be added to the reference keyword regarding
the ordering of the ports.  A clarification will be added.

Some discussion was held on [Interconnect Port Groups]; detailed discussion will be
deferred until mixed-mode changes have been finalized.

Walter asked whether more than two ports may be part of the mixed-mode format, if
separated by commas.  This will be clarified.  Bob advised clarifying the format to
ensure that single-ended ports are properly explained in the format outline.

Some semicolons still remain in the document.  These will be removed.  Bob
noted that some keywords in the examples appear on lines by themselves,
with no data immediately following them.  This should either be changed or
specific rules be added to the document to explain the usage.  Walter asked
that underscores, rather than commas, be used as delimiters, to ease EDA
tool interpretation.

Michael observed that nearly all the mixed-mode text was now complete, except
the explanatory text in the mixed-mode section and the "Notes on Data Derivation"
at the end.  Vladimir supplied draft documents to cover the latter shortly
before the meeting.

The team will review Vladimir's mixed-mode conversion document 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
'
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