IBIS Macromodel Task Group

Meeting date: 23 September 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
  Fangyi Rao, Agilent
  Ganesh Narayanaswamy, ST Micro
  Gang Kang, Sigrity
  Hemant Shah, Cadence Design Systems
  Ian Dodd, Agilent
  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 Systems
* Michael Mirmak, Intel Corp.
* Mike LaBonte, Cisco Systems
  Mike Steinberger, SiSoft
* Mustansir Fanaswalla, Xilinx
  Patrick O'Halloran, Tiburon Design Automation
  Paul Fernando, NCSU
* Pavani Jella, TI
* 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 Design Systems
  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 Design Systems


-----
Opens:

- Review Walter's document.

--------------------------
Call for patent disclosure:

- No one declared a patent.


-------------
Review of ARs:

- Michael M: Clean up the document for discussion in next meeting
  - Done

- Walter: Send modified EMD slides to Mike LaBonte for posting
  - Sent Sep 16 and posted

- David Banas report Xilinx position on LTI assumption for SerDes
  - LTI is a good enough assumption for SerDes models

- 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

-------------
New Discussion:

Review of revised document for presentation to Synopsys
- This is written to be generic, it could go to any vendor.
- It will not include encryption support except for P1375
  - David: Have model makers requested encryption of interconnect models?
    - No
- Correction: Some single quotes were changed to backquotes by the editor tool.
- We should document scaling prefixes, one of:
  - MEG for mega, M for milli
  - M for mega, m for milli
  - X for mega
- Correction: Node numbers extend from 1 to 1e16-1, not 1e16
- In Berkeley SPICE node names that begin with a digit ignore subsequent letters
- We added the Inductor element
- Is Foster Pole-Residue common, or is Foster a variant ?
  - Radek: Foster is the creator of the format
- The W element will only support .MODEL syntax
  - We need to drop the RLGCFILE parameter
  - .INCLUDE can instead be used for external .MODELs
  - Radek: Raw RLGC files are useful for static models.
  - Randy: Many tools use this format
  - Michael M: We could leave it but not document the format.
- Radek: Table model format specifies frequency for each matrix
- Michael M: The W element NODEMAP is critical for certain applications
- Randy: The encryption standard mentioned previously is actually P1735
  - Michael M: P1735 is a public standard for a macro language to express encryption
- Arpad: Should we allow expressions to be used other than as constants?
  - Michael M: Too much detail:
    - Right now we are trying only to get past the permission problem
  - Once we have permission, vendors can add proprietary content
- Arpad: In the node name discussion is (:) correct for concatenation?
  - It probably should be (.)
- Michael M: This should be enough to begin the discussion with Synopsys
  - They can meet next week
- Arpad: Will we bring Synopsys into our meetings?
  - Michael M: We will work with them offline

Should we talk about die capacitance characterization next week?
- It is not yet an official BIRD

Arpad: We had hoped at one time to avoid creating more keywords
- Michael M: Having a methodology to guide us would help
- Walter: It might be done with an extension of interconnect SPICE

Walter: The updated EMD document has been posted and is ready for review.

Next meeting: 30 September 2008 12:00pm PT

-----------