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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

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Next Meeting
October 10, 2007

               Telephone     Bridge   Passcode
              916-356-2663     4      227-7073

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  Subject: IBIS Ad Hoc Interconnect Meeting
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Agenda:
- Review of Touchstone(R) 2.0 draft 11

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Minutes from September 26:

Attendees:
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(* denotes present)
Agilent                    - Radek Biernacki*, John Moore
Green Streak Programs      - Lynne Green
Intel                      - Michael Mirmak*
Mentor Graphics Corp.      - John Angulo*
Micron Technology          - Randy Wolff*
Teraspeed Consulting Group - Bob Ross* 

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The team conducted an additional review of the Touchstone 2.0 draft.  For
clarity, the suggestions from Sam Chitwood were summarized:

1) At this point, a parameter listing the number of frequencies in the
   file is not seen as needed.  Bob observed that the information would
   only be useful for error-checking.  Radek and Randy agreed, with
   Randy stating that this is somewhat like the EBD file format, which
   contains numerous redundant parameters for cross-checking.
2) Mixed-mode support was deemed not needed; if demand was strong, this
   could be reintroduced in a future version
3) ZIP or other binary compression would force some sort of choice for
   the method, with extensive additions to the specification required.
   Would password-protection be needed?  This was also deferred.
4) Lower- or upper-half representation of data may be useful, but would
   be even less compelling than binary support, due to the file size
   reduction being less than 50%.

No significant changes to the current draft are anticipated based on
these suggestions.
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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