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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@xxxxxxxxxxxxx

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Next Meeting
Wednesday, December 17, 2008
8 AM US Pacific Time

               Telephone     Bridge   Passcode
              916-356-2663     3      706-2634

LiveMeeting: https://webjoin.intel.com/?passcode=3674071

Agenda:
- Call for patents
- Opens
- Review of final Touchstone 2.0 draft (con't)

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Minutes from December 10:

Attendees:
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(* 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*

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No patents were announced.

Michael inquired about upcoming meetings.  A meeting will be held on Dec.
17, but meetings thereafter will be cancelled until early 2009.

The team reviewed the draft 11 Touchstone 2.0 document posted to the
mailing list.

- Bob suggested that the dash, underscore, space rule sentence in #7
  should be removed; Radek suggested adding a rule that only a single space
  be allowed (no whitespace multiples); keywords should be considered literal
- Radek noted that the last sentence in rule #4 does not make sense; did
  we ever want to use SNP, with N as the letter instead of a number?
- Radek added an objection to the "To address this," sentence, as it does not 
add value
- Radek asked, does "other than those recommended" mean no extension 
whatsoever?  It should be
  clear that a missing extension is acceptable.
- Bob requested that, on p. 5, the keywords be put in an indented list; Radek 
added that
  the sequence of keywords is very good.
- Radek suggested removing the reference to insertion loss as this is a derived
  quantity; we're ordering the entries, not the losses.
- Bob suggested that the word "additional" in first sentence is repetitive.
- Bob asked whether [Number of Ports] and [Version] are a 1-2 pair?  Can the
  options line fit in-between?  Most but not all ordering done with respect to
  [Version] or [Number of Ports].  Current rule: options line must appear before
  [Network Data].
- Radek questioned why the options line is permitted *first*.  He suggested 
keeping
  the current [Version] rule.
- Brad added that if we change options line in future, having Version first is 
useful;
  Michael asked how likely that was.  Radek observed that we are removing 
functions from options;
  Bob noted that it still defines default reference impedance, plus other 
defaults.
- Radek noted that ordering of options vs. [Reference] is not a parsing problem
- A new rule was agreed: options after [Number of Ports] and before [Network 
Data]; this was
  tabled for future discussion
- On p. 9, [Number of Frequencies] is ordered versus [Version].  This should
  be changed to [Number of Ports] globally
- On p. 11, move examples 5 and 6 after [Network Data]
- the phrase "Touchstone 2.0" should include "and later" globally
- On p.13, care should be taken regarding rules for Network Data in version 1.0

The remainder of the document will be covered in the next meeting.

AR: Bob to check on any conflicts with the use of .ts as an extension
AR: Michael to provide formal review text - DONE
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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

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