IBIS Macromodel Task Group

Meeting date: 29 Apr 2008

Members (asterisk for those attending):
  Ambrish Varma, Cadence Design Systems
* Anders Ekholm, Ericsson
  Arpad Muranyi, Mentor Graphics Corp.
  Barry Katz, SiSoft
* Bob Ross, Teraspeed Consulting Group
* Brad Brim, Sigrity
* Brad Griffin, Cadence Design Systems
* David Banas, Xilinx
  Donald Telian, consultant
  Doug White, Cisco Systems
  Essaid Bensoudane, ST Microelectronics
  Ganesh Narayanaswamy, ST Micro
* Gang Kang, Sigrity
  Hemant Shah, Cadence Design Systems
  Ian Dodd
  Joe Abler, IBM
* John Angulo, Mentor Graphics
  John Shields, Mentor Graphics
  Ken Willis, Cadence Design Systems
  Kumar
  Lance Wang, Cadence Design Systems
  Luis Boluna, Cisco
  Michael Mirmak, Intel Corp.
* Mike LaBonte, Cisco Systems
  Mike Steinberger, SiSoft
  Mustansir Fanaswalla, Xilinx
  Patrick O'Halloran, Tiburon Design Automation
  Paul Fernando, NCSU
* Radek Biernacki, Agilent (EESof)
* Randy Wolff, Micron Technology
  Ray Comeau, Cadence Design Systems
  Richard Mellitz, Intel
  Richard Ward, Texas Instruments
  Sam Chitwood, Sigrity
  Sanjeev Gupta, Agilent
  Shangli Wu, Cadence
* Sid Singh, Extreme Networks
  Stephen Scearce, Cisco Systems
  Steve Pytel, Ansoft
  Syed Huq, Cisco Systems
  Syed Sadeghi, ST Micro
* Terry Jernberg, Cadence Design Systems
* Todd Westerhoff, SiSoft
  Vikas Gupta, Xilinx
  Vuk Borich, Agilent
* Walter Katz, SiSoft
* Zhen Mu, Cadence


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Call for patent disclosure:

- No one declared a patent.

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Opens:

John Angulo chair

Has BIRD 107 been submitted?
- Walter sent this last week.
- There was one revision to fix the document title property.
- Some confusion over whether this is an official BIRD submission.
- Michael M. will post the last version received.

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Review of ARs:

- Arpad will send BIRD 107 to Michael M and Bob
  - Done

- Michael M list pros and cons of ICM and EMD
  - not present

- Walter send "final" BIRD 107 documents
  - Done

- David Banas report Xilinx position on LTI assumption for SerDes
  - No update

- Arpad:  Write parameter passing syntax proposal (BIRD draft)
  for *-AMS models in IBIS that is consistent with the
  parameter passing syntax of the AMI models
  - TBD

- TBD:    Propose a parameter passing syntax for the SPICE
  - [External ...] also?
  - TBD

- Arpad:  Review the documentation (annotation) in the macro libraries.
  - Deferred until a demand arises or we have nothing else to do

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New Discussion:

Mike LaBonte will be unable to join for the next 2 weeks
- Someone else will have to take minutes

Bob presented the BIRD 107.2 draft with modifications:
- Some people had difficulty getting into April 25 Open Forum meeting where BIRD 107 was previously discussed.
- Underscores have been added in certain places for consistency
- Kumar sent email to the list presenting some issues
  - Todd: Kumar is no longer affiliated with Cadence
- "impulse matrix" appears in many places without underscores
  - This will be proposed as BIRD 108

Walter presented "ICM vs EMD" by comparing a simplified 9 pin IC package in both formats:
- The EMD format is less verbose
  - John: This does not matter as much when programs write and read them.
- If coupled wires are unequal length, they have to be broken into bands.
- [Port Names] has been added to EMD for convenience.
  - Example: port 1 = D.1, port 10 = B.1
- In this 18-port example, a sparse S-parameter matrix has 27 entries out of 324 for the full matrix.
  - Reduction is even more dramatic as pin count increases.
- Bob: May be some danger with sparse matrix format:
  - Walter: Maybe the parameter should not be "TouchstoneFile"
  - John: Will this delay Touchstone 2, or become part of Touchstone 3?
  - Walter: A sparse S-param format would be part of an ICM or EMD layer above the Touchstone file.
- Walter: Customers are more interested in delay than coupling, and may have a mix of RLGC and S-param data.
  - John: ICM is unable to mix and match W and S elements.

AR: Walter send "ICM vs EMC" to Mike for web posting

Next meeting: 06 May 2008 12:00pm PT

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