======================================================================
IBIS INTERCONNECT MODELING AD HOC TASK GROUP MEETING MINUTES
Meeting Date: April 18, 2007

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

Mailing list: ibis-interconn@freelists.org

Attendees:
----------
(* 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* 

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

Next Meeting:
Wednesday, May 2, 2007

               Telephone     Bridge   Passcode
              916-356-2663     4      148-5142 


LiveMeeting Details:

  Subject: IBIS Ad Hoc Interconnect Meeting
  Meeting URL: https://www.livemeeting.com/cc/intel/join
  Meeting ID: 8N4R5S
  Meeting Key: 7k.|5g&C2


Agenda:
- Review of Touchstone(R)2 draft 6
- Example of S-parameter Shorting under IIRD9

========================================================================
Michael described a new BUG in the ICMCHK1 parser regarding the filename 
extension on Touchstone files.  He will file a formal report before the
Open Forum meeting.

Michael completed all revisions requested in the previous meeting.
During review of the latest revision of the Touchstone(R) update draft,
several recommendations were made:
- (Radek) revise the noise parameters according to the following summary:
   x1     is a frequency and is formatted from the options line
   x2     is a magnitude in dB
   x3     is not formated by the option line BUT it does use the reference
          impedance from the options line
          in version 1.0 files.
   x4     is in degrees
   x5     has normalization per version 1.0 to whatever is on the options 
          line (this was not clear) but should not be normalized in version 
          2.0
          
          This section should also be clarified to state that noise 
          parameter rules are significantly different than the format used
          in the rest of the document.

- (Radek) use "order" rather than "format" with "row-wise"  
- (Radek) check the 3x3 and 4x4 matrix explanations for consistency with
          version 2.0 rules
- (John)  clarify whether line-termination characters are required before
          new frequency points
- (Bob)   reformat the document to remove or reorder the use of italics
          to be more consistent with industry usage
- (Bob)   check the copyright status; does "GEIA/IBIS Open Forum

Other minor issues are:
- "n-port" mentioned twice in the introduction
- subparameters are mentioned but never defined
- the word "arrayed" is used; should be "arranged"
- grammatical error: "parameters itself is"
- case usage on "kHz" should be consistent


Michael will implement these changes.  He also suggested that a keyword/feature
hierarchy and table of contents be added.

The IIRD9 shorting example for S-parameters was briefly discussed.

ARs
-----
Sam     - provide a simple drawing of "virtual reference" case
Michael - update IIRD9 draft with changes for final review next time - DONE


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