IBIS Macromodel Task Group

Meeting date: 10 Apr 2007

Members (asterisk for those attending):
* Ambrish Varma, Cadence Design Systems
* Arpad Muranyi, Intel Corp.
  Barry Katz, SiSoft
* Bob Ross, Teraspeed Consulting Group
* Doug White, Cisco Systems
* Ganesh Narayanaswamy, ST Micro
* Hemant Shah, Cadence Design Systems
  Ian Dodd, Mentor Graphics
  Joe Abler, IBM
* John Angulo, Mentor Graphics
  John Shields, Mentor Graphics
  Ken Willis, Cadence Design Systems
* Kumar, Cadence Design Systems
  Lance Wang, Cadence Design Systems
  Luis Boluna, Cisco
* Michael Mirmak, Intel Corp.
* Mike LaBonte, Cisco Systems
* Mike Steinberger, SiSoft
  Patrick O'Halloran, Tiburon Design Automation
  Paul Fernando, NCSU
* Radek Biernacki, Agilent (EESof)
* Randy Wolff, Micron Technology
  Richard Ward, Texas Instruments
  Sanjeev Gupta, Agilent
  Shangli Wu, Cadence
  Stephen Scearce, Cisco Systems
  Syed Huq, Cisco Systems
* Todd Westerhoff, SiSoft
  Vikas Gupta, Xilinx
* Vuk Borich, Agilent
* Walter Katz, SiSoft

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Call for patent disclosure:

No one declared a patent.

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Opens:

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Review of ARs:

- Arpad: Review the new macro library files.
  TBD

- Arpad: Write parameter passing syntax proposal for a possible BIRD
  TBD

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New Discussion:

Presentation by three EDA vendors:
- Presented by Todd
- Gives a fairly complete description of the developed approach.
- Slide 11:
  - Arpad asked about "non LTI" assumptions, which seemed backward.
  - Vuk: by assuming non LTI, no special simulator is required
- Slide 13:
  - Ignore_Bits tells simulator that some number of initial bits
    may be garbage.
  - Ignore_Bits is a standard parameter
  - Other parameters may be optional
  - Arpad asked what use non-standard parameters have:
    - Simulator will not know what to do with them.
    - Walter: Strength can be set by user, the model knows what to do.
- Slide 15:
  - Arpad: How many non-linear waveforms are needed when Init() used?
  - Kumar: maybe millions of bits; as many as it takes
  - Walter:
    - Without crosstalk 1 million bits need to be simulated
    - With crosstalk 10 million bits are needed
    - This is not verified.
  - Todd: some semi vendors feel the need to simulate time varying behavior
  - TX GetWave() should have PWL stimulus
- Some color change suggestions for clarity.

AR: Todd will fix a few typos in the presentation

We will talk about drafting a BIRD in the next meeting, in 2 weeks.

Next meeting: 24 Apr 2007 12:00pm PT