IBIS Macromodel Task Group

Meeting date: 16 Oct 2007

Members (asterisk for those attending):
* Ambrish Varma, Cadence Design Systems
* Arpad Muranyi, Mentor Graphics Corp.
  Barry Katz, SiSoft
* Bob Ross, Teraspeed Consulting Group
  David Banas, Xilinx
  Donald Telian, consultant
* Doug White, Cisco Systems
  Essaid Bensoudane, ST Microelectronics
  Ganesh Narayanaswamy, ST Micro
  Hemant Shah, Cadence Design Systems
  Ian Dodd
  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
  Ray Comeau, Cadence Design Systems
* Richard Ward, Texas Instruments
  Sanjeev Gupta, Agilent
  Shangli Wu, Cadence
  Stephen Scearce, Cisco Systems
  Syed Huq, Cisco Systems
  Syed Sadeghi, ST Micro
* 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:

- SiSoft will propose a new reserved_parameter keyword table
  - TBD

- Write parameter passing syntax proposal for a possible BIRD
  a) Propose a parameter passing syntax for AMI models
  b) IBIS spec should allow parameter value assignment for
     *-AMS using a syntax that is consistent with the
     parameter passing syntax of the AMI models
  c) Allow parameter passing for SPICE [External ...] also?
     - Berkeley SPICE does not handle paraeters at all.
     - Walter proposed handling this with a preprocessor

- Ian: send relevant papers on related IEEE work
  - TBD
  - Steve Pytel has tentatively agreed to attend and discuss.
  - Arpad will try and contact Rich Mellitz to get him to attend this meeting.

- Arpad: Review the new macro library files.
  - TBD

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New Discussion:

- Potential Modifications for differential I/O
  - Differential stuff currently in two sections: [Diff Pin] and [Model]
  - Do we need a [Diff Model] section?
- Walter discussed the existing and new (proposed) differential parameters
  - It was noted that driver test circuits can be quite complex
    - e.g., can have common mode voltage sources attached, etc.
    - Do we need a "subcircuit" approach for test loads, so as to keep the 
      IBIS standard as simple as possible (and not have specs for all special cases)?
  - There are special cases, such as programmable I/O types in memory
     controllers, which may have different parameters required for each 
     that need to be handled

AR:  Arpad will forward Walter's email regarding differential parameters to the group.  All should comment via the mailer.

AR:  Todd will send update of SiSoft IBIS AMI toolkit.  Changes:  Easier to use, all I/O files can be .csv, updated program to generate patterns, etc.

Next meeting: 23 Oct 2007 12:00pm PT