IBIS Macromodel Task Group

Meeting date: 06 April 2010

Members (asterisk for those attending):
  Adge Hawes, IBM
* 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
  Chris Herrick, Ansoft
  Chris McGrath, Synopsys
* Danil Kirsanov, Ansoft
  David Banas, Xilinx
  Deepak Ramaswany, Ansoft
  Donald Telian, consultant
  Doug White, Cisco Systems
* Eckhard Lenski, Nokia-Siemens Networks
  Eckhard Miersch, Sigrity
  Essaid Bensoudane, ST Microelectronics
  Fangyi Rao, Agilent
  Ganesh Narayanaswamy, ST Micro
  Gang Kang, Sigrity
  Hemant Shah, Cadence Design Systems
  Ian Dodd, consultant
  Jerry Chuang, Xilinx
  Joe Abler, IBM
* John Angulo, Mentor Graphics
  John Shields, Mentor Graphics
  Ken Willis, Sigrity
* Kumar Keshavan, Sigrity
  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 Komow, Cadence Design Systems
  Richard Mellitz, Intel
  Richard Ward, Texas Instruments
  Samuel Mertens, Ansoft
  Sam Chitwood, Sigrity
  Sanjeev Gupta, Agilent
  Shangli Wu, Cadence Design Systems
  Sid Singh, Extreme Networks
  Stephen Scearce, Cisco Systems
  Steve Kaufer, Mentor Graphics
  Steve Pytel, Ansoft
  Syed Huq, Cisco Systems
  Syed Sadeghi, ST Micro
  Ted Mido, Synopsys
  Terry Jernberg, Cadence Design Systems
* Todd Westerhoff, SiSoft
* Vladimir Dmitriev-Zdorov, Mentor Graphics
  Vikas Gupta, Xilinx
  Vuk Borich, Agilent
* Walter Katz, SiSoft
  Wenyi Jin, LSI Logic
  Zhen Mu, Mentor Graphics

------------------------------------------------------------------------
Opens:

- None

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

- No one declared a patent.

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

- Arpad: Write a clarification BIRD to discuss accuracy issues related to the 
  various AMI clock_tick algorithms in an IBIS-AMI DLL
  - Done
  - This is covered by a draft BIRD from Scott McMorrow

- 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:

Arpad announced 4 agenda items for today.

Arpad showed presentation "The process and goal of the AMI BIRD"
- Slide 4:
  - Bob: This sounds like we are addressing IBIS 5.0 only
- Michael M: How many have read through this?
- Arpad: I read through it in the last meeting

Arpad showed the spreadsheet
- Rows 7 through 25 are new
- The fact that the parser developer asked questions indicates a need for
  clarification
- There may be some duplication between rows
  - For example row 46
- Bob: This is a good start
  - There are new changes mingled with 5.0 issues
- Arpad: We should decide how to use column B to Must Fix" denote disposition
- Mike L: It could have 5.0 and 5.1 where it has just "yes"
- Arpad add new columns:
  - Clarification
  - Correction
  - New feature
- Bob: Changes will not appear until 5.1
  - We could have some "pre-clarification" BIRDs
  - It is not clear what the status is until 5.1 is approved
- Arpad: I will put this on the web site as is
- John: It's all going into 5.1
  - We try to make only clarifications
  - Some things will require a feature change
- Ambrish: Is row 29 a feature change or correction?
- Arpad: We will get to that next

Arpad showed Scott's draft BIRD "IBIS-AMI clock_times Clarification"
- Changes IBIS 3.2.2.3 clock_times
- Quite a bit of new text.
- This addresses many thing we did not think of.
- Bob: We can discuss it in detail in another meeting.
  - It should be emailed to the reflector
- Walter: It would be good to have TXT and PDF

AR: Arpad send Scott McMorrow BIRD as TXT and PDF to ibis-macro

Arpad showed his BIRD "AMI-AMI Flow Correction"
- This has a lot of if/then items to explain the flow
- All of section 2 is replaced.
- It does not have the leading "*" to mark changed lines
- There are many lines and most of them are changed.
- Arpad showed the graphical flow to explain
  - On slide 2 steps 5 and 6 pose a deconvolution problem
  - Init_Returns_Filter is a correction, not a new feature
  - We were comfortable with this last fall
- Bob: I classify it as a new feature
  - It should be in 5.1
  - The approach of saying "replace this with this is good"
- Mike L: That approach is best when the content is mostly changed
- Arpad: There are tools to help highlight differences
- Bob: We could vote on this next week
  - These BIRDs stay in the committee
- Mike L: Does this BIRD refer to section 2 of the IBIS spec?
- Arpad: It is actually sub-section 2 of section 10 in IBIS.
- Arpad changed "section" to "sub-section"

AR: Arpad send AMI-AMI Flow Correction to ibis-macro for vote next week

Next meeting: 13 April 2009 12:00pm PT

--------

IBIS Interconnect SPICE Wish List:

1) Simulator directives