[ibis-macro] Minutes from the 19 Jan 2010 ibis-macro meeting
- From: <rrwolff@xxxxxxxxxx>
- To: <ibis-macro@xxxxxxxxxxxxx>
- Date: Wed, 20 Jan 2010 10:03:41 -0700
Minutes from the January 19, 2010 IBIS ATM meeting are attached.
Randy Wolff
IBIS Macromodel Task Group
Meeting date: 15 January 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, Cadence Design Systems
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
Zhen Mu, Mentor Graphics
------------------------------------------------------------------------
Opens:
None.
--------------------------
Call for patent disclosure:
- No one declared a patent.
-------------
Review of ARs:
- Walter to send BIRD draft with the changes to Mike L. to be posted on the ATM
web site
- Done
- Mike post Walter's BIRD update
- Done
- Arpad: Write a clarification BIRD to discuss accuracy issues related to the
various AMI clock_tick algorithms in an IBIS-AMI DLL
- TBD
- Todd: Update the BIRD for IBIS S-parameter box based on feedback from
discussion
- No update
- 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:
Walter showed the latest draft of the AMI BIRD document:
- Red is deleted, blue added or modified, black original
Walter: Accepted changes in Word when he thought everyone was in agreement.
- Start reviewing on page 8.
- Table, Gaussian, Dual-Dirac, DjRj have not been practical and are no longer
used. Would like to stop supporting them. For instance, proposed separate,
new parameters for TxDj, TxRj.
- Everyone supported removal of this text.
- Arpad: Make sure there is equivalent replacement for these
- Walter: Yes, will make sure of this.
Walter: Added new text under Default.
- Arpad: What is an Allowed Value?
- Walter: This is what Format had. Allowed Values can be placed into DLL
- Default<value> is now optional.
Walter: Description <string> is changed to optional.
- Arpad: Add text to say that Description is highly recommended for Model
Specific
Walter: Added text to say that the length of description is not limited by line
length, but should have an abstract of the full description in the first 128
characters.
- Arpad: Doesn't like hard coding of 128 characters. Maybe describe it as the
IBIS line length limit.
Bob: We can use Description multiple times within a Parameter. This is legal
with the parser right now. Do we want to continue support of this?
- Will discuss this question later.
Walter: Removed String description to talk about it in another section.
Walter: Added text to say that every parameter must have one of the
'Allowed-Value' sub-parameters (except for Usage Out).
- Bob: May want to add more description here.
- Fangyi: What about the dummy Init call that returns an Out?
- Walter: This is for normal circumstances. A returned value is just a value.
- Fangyi: Concerned that the model developer won't get this right.
- Walter: If they don't, then they have a bug.
Walter: Added text to say that if Reserved Parameters must have one and only one
Usage or Type, then these are optional.
- Bob: Objects to this, because it adds complexity. Will discuss more later.
Walter: Added more notes 3-5 on page 9. Must revisit the wording later.
- Page 10 adds details about IBIS-AMI conventions. The text describes In,
InOut, Out and Info.
- Page 12 added text about the AMISearchPath. This is not resolved yet.
- Page 12 added a rule that multiple executable lines in a [Algorithmic Model]
must have the same Parameter file name.
Walter: Listed on page 13 what the Reserved Parameters should be.
- Bob: doesn't want AMI Version to be required
Walter: Init Returns Filter, Tx_Dj, Tx_Rj, Rx_Clock_Recovery_Mean and
Rx_Clock_Recovery_RJ are new
- Page 14 describes each of the Reserved Parameters in more detail
- Bob: AMI Version, doesn't like type Float because one can have Value 5.1 or
5.10, and these are really different
- Arpad: Where are these in the structure?
- Walter: These Reserved Parameters are leaves off of the root, and this is
described above
Walter: Use Init Output has changed from the previous BIRD.
- Wants to delete Kumar's comment in the Init Returns Filter section.
- Arpad: leave question for now for Kumar to address
Walter: original BIRD has two jitter parameters, Tx_Jitter and Tx_DCD.
Tx_Jitter
was assumed to be either Gaussian, Dual-Dirac, DjRj or a Table. It is more
complicated than this. Many independent parameters are needed. Wants to keep
Tx_DCD but get rid of Tx_Jitter and redefine it.
- Random Jitter is gaussian with just a sigma parameter. Deterministic jitter
can be of several types such as sinusoidal, Dual-Dirac, etc. These are not
described yet. This is just a clarification of the existing BIRD.
Walter: What presentations should be made at DesignCon about the ATM group's
progress?
- Arpad: The best we can do is give a progress report.
- Walter: Let's work on that for DesignCon. Also asked Brad Brim to give a short
presentation on the Model Connection Protocol.
AR: Walter to email latest BIRD draft to group
AR: Mike to convert Walter's BIRD to PDF and post to web
Next meeting: 26 Jan 2009 12:00pm PT
--------
IBIS Interconnect SPICE Wish List:
1) Simulator directives
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