IBIS Macromodel Task Group

Meeting date: 29 March 2011

Members (asterisk for those attending):
Agilent:                    * Fangyi Rao
                            * Radek Biernacki
Ansoft:                       Chris Herrick
                              Danil Kirsanov
Ansys:                        Samuel Mertens
                            * Dan Dvorscak
                              Deepak Ramaswamy
                              Jianhua Gu
                            * Curtis Clark
Cadence Design Systems:       Terry Jernberg
                            * Ambrish Varma
Celsionix:                    Kellee Crisafulli
Cisco Systems:                Mike LaBonte
                              Stephen Scearce
			    * Ashwin Vasudevan
Ericsson:                     Anders Ekholm
IBM:                          Greg Edlund
Intel:                        Michael Mirmak
LSI Logic:                    Wenyi Jin
Mentor Graphics:            * John Angulo
                              Vladimir Dmitriev-Zdorov
                              Zhen Mu
                            * Arpad Muranyi
Micron Technology:            Randy Wolff
Nokia-Siemens Networks:     * Eckhard Lenski
Sigrity:                      Brad Brim
                            * Kumar Keshavan
                            * Ken Willis
SiSoft:                     * Walter Katz
                              Mike Steinberger
                              Todd Westerhoff
Snowbush IP:                  Marcus Van Ierssel
ST Micro:                     Syed Sadeghi
Teraspeed Consulting Group:   Scott McMorrow
                            * Bob Ross
TI:                           Casey Morrison
                              Alfred Chong
Vitesse Semiconductor:        Eric Sweetman
Xilinx:                       Mustansir Fanaswalla

The meeting was lead by Arpad Muranyi

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Opens:

Ambrish asked why BIRDs are submitted directly to the Open Forum:
  - At least the AMI related BIRDs should be discussed in the IBIS-ATM committee first.
- Arpad: There is no rule about this.
  - Anyone can submit BIRDs to the Open Forum
  - The general guideline is to submit finished BIRDs which do not need tedious technical work and refinements.
  - That work needs to be done in the workgroups.
- Walter: This should be discussed in the Open Forum.
- Ken: There should be a "gentlemen's agreement" in this committee that AMI-related BIRDs should go through here first.

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Call for patent disclosure:

- None

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Review of ARs:

- Ambrish start a BIRD on task list row 25
  - In progress

- Bob write a BIRD on correcting Table 1-3 in the spec.  (Row 23).
  - In progress

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New Discussion:

Bob discussed parser bug fixes.
- Ambrish mentioned that Reserved_Parameter and Model_Specific sections could legally be reversed.
- Arpad brought up sequence-specific nature of Dependency tables, but that did not appear to be a showstopper per Walter.

Quick intro to BIRD 129 by Arpad on polarity for D_to_A converters for use by [External Model] syntax.
- Along with updates to analog modeling BIRDS 117 and 118.

Walter gave a quick overview on BIRD 123.1 (jitter) and 122.1 (analog modeling).
- BIRD 123.1 has been posted to the Open Forum and basically contains an additional parameter.
- BIRD 122.1 is not finished yet, and is a major re-write of the previous version.
- It needs more work and careful review.
- Bob thought that due to the large amount of new content this should be a new BIRD and BIRD 122.1 should be voted down.
- Walter did not oppose the suggestion.

Crosstalk BIRD was updated to rev. 10 through multiple emails over the week.
- It is now out for review with the target to vote on it next week.

Ambrish went through the Type_Format_Table_BIRD_02.txt, which documents what is currently allowed.
- This will be put on the back-burner for now, as it has dependencies on the Table BIRD.

Ken and Kumar went through updates to the back-channel proposal.
- Kumar answered questions on some of the keywords like LFSR, LFSR_seed, etc.
- There were ideas on how to make the format of those more compact.
- Many questions from Walter on 802.3 spec.
- TrainOn parameter could be a string, and Train could be a list since SerDes IP can often support multiple standards.
- Described how the intent of parameters inside of BackChanControls were not intended to be Reserved_Parameters, but similar to Model_Specific parameters for the particular standard.
- There was some discussion on how to handle standard-specific files.

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Next meeting: 05 Apr 2011 12:00pm PT

Next agenda:
1) Task list item discussions

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IBIS Interconnect SPICE Wish List:

1) Simulator directives