IBIS Macromodel Task Group

Meeting date: 04 Mar 2008

Members (asterisk for those attending):
  Ambrish Varma, Cadence Design Systems
* Arpad Muranyi, Mentor Graphics Corp.
  Barry Katz, SiSoft
* Bob Ross, Teraspeed Consulting Group
  Brad Griffin, Cadence Design Systems
* 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
  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
  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

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Call for patent disclosure:

- No one declared a patent.

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Opens:

Todd: Will report on status testing toolkit interoperability

Arpad asked where we stand on the true diff BIRD
- Randy and Walter need to meet on this
- The Tvac keyword is figured out
- Still in "off-line" phase

David had some trouble with LiveMeeting
- Arpad said that switching to WebX is a possibility

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Review of ARs:

- David Banas report Xilinx position on LTI assumption for SerDes
  - David pinged others recently but nothing to report yet

- AMI BIRD authors meet to prove AMI BIRD can handle Mellitz cases
  - Todd: we need real part data
  - We decided to leave this AR on the list.

- Walter coordinate completion of true diff BIRD draft
  - In progress

- Michael M. draft Eye keywords for true diff BIRD
  - In progress

- Randy draft derating keywords for true diff BIRD
  - Randy and Walter need to meet on this
  - The Tvac keyword is figured out
  - Still in "off-line" phase

- 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:

Toolkit interoperability testing
- Todd has been testing models in both SiSoft and Cadence AMI toolkits
- Can get waveforms to nearly overlay
- Some confusion about behavioral differences between tools
  - Hard to figure out how to compare inputs and outputs of each tool
- Terry can help

Walter presented slides on "Electronic Module Description"
- Existing formats are EBD and ICM
- IP issues impair delivery of full layout descriptions
- We need "corner models" to cover the range of modules that might be
  plugged in (DIMMs, etc.)
- EMD = Electronic Module Description
- Using "Pad" to refer to component pins
- Addresses power delivery structures
- Extended Nets connect nets through series resistors
- New language would be translated to target simulator languages
- Similar structure: subckts, etc.
- Arpad: Michael Mirmak's SPICE proposal seems similar
- S-param and impulse response are somewhat interchangeable
- David: suggest adding the G element (simple conductance)
- Mike L: suggest adding the K element (mutual inductance)
- Randy: suggest adding controlled sources (can model many things)
- Arpad: why are these grouped into levels?
  - Walter: tools lacking some elements can declare their capabilities
- Arpad: this syntax will have to be defined in more detail
  - Is the [External Model] the same as IBIS?
  - Walter: this is different
  - Bob: it would help to use a different keyword
- Bob: would this be a separate standard
  - Walter: it should be independent of IBIS and EBD
- Arpad: This might replace the Michael M. IBIS-ICM effort

Next meeting: 11 Mar 2007 12:00pm PT

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