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IBIS INTERCONNECT MODELING AD HOC TASK GROUP MEETING MINUTES
Meeting Date: March 7, 2007

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

Mailing list: ibis-interconn@freelists.org

Attendees:
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(* denotes present)
Agilent                    - Radek Biernacki*
Ansoft                     - Andrew Byers*, Michael Slavkin*
Intel                      - Michael Mirmak*
Mentor Graphics Corp.      - John Angulo*, Vladimir Dmitriev-Zdorov*
Sigrity                    - Sam Chitwood*
Teraspeed Consulting Group - Bob Ross* 

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Next Meeting:
Wednesday, April 4, 2007

               Telephone     Bridge   Passcode
              916-356-2663     4      645-2930

LiveMeeting Details:

  Subject: IBIS Ad Hoc Interconnect Team
  Meeting URL: https://www.livemeeting.com/cc/intel/join
  Meeting ID: BTBH4Q
  Meeting Key: r!s74T5Zs


Agenda:
- Call for patent disclosures
- Opens
- Review of updated Touchstone(R) draft 

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No opens were raised.

On IIRD9, Sam noted that ground and power terminals are often shorted in
early rounds of simulations for solution space investigations using
S-parameters on packages.  Bob expressed a desire to distinguish between
signals, ports and terminals.  These will be clarified in the next 
draft through examples, with both shorting and non-shorted cases 
distinguished.

Review of the updated Touchstone draft continued.  Based on comments from the participants, normalization is to be removed 
for network data and also for noise resistance.  Vladimir noted that
the reference impedance is in fact only needed for S-parameters.  
Vladimir and Michael Slavkin added that normalization applies for G, H, Y and Z
parameters, not for S-parameters.  

ARs
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Sam     - provide a simple drawing of "virtual reference" case
Michael - create IIRD9 examples showing combinations of terminals and ports
          for power and ground
Michael - update IIRD9 draft with changes for final review next time 

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