[ibis-macro] Re: IBIS Summit
- From: "Walter Katz" <wkatz@xxxxxxxxxx>
- To: <ambrishv@xxxxxxxxxxx>, "'IBIS-ATM'" <ibis-macro@xxxxxxxxxxxxx>
- Date: Wed, 08 Feb 2012 12:09:49 -0500 (EST)
Ken, Ambrish,
You are correct, I would "like" these to be in the standard, but will
support 116-118 as is. I do point out that two of my shortcuts are
equivalent to Ambrish's BIRD 144. The two "Thevenin" circuits are
equivalent to the Classic IBIS model (IV, VT, dV/dt) when they are LTI.
Walter
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Ambrish Varma
Sent: Wednesday, February 08, 2012 12:04 PM
To: 'IBIS-ATM'
Subject: [ibis-macro] Re: IBIS Summit
Ken,
If my understanding is correct, and correct me if I am wrong Walter,
Sisoft would 'like' to include shortcut to these four models - but is ok
with the BIRDs as they stand right now and would supply and publish
subckts with the .ibs file for the much discussed 'canned' circuits that
would work with BIRD 116.
That is my takeaway from the IBIS summit and yesterday's ATM call. Again,
correct me if I wrong.
Thanks,
Ambrish.
Ambrish Varma | Member of Consulting Staff
P: 978.262.6431 <http://www.cadence.com> www.cadence.com
_____
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Ken Willis
Sent: Tuesday, February 07, 2012 10:13 PM
To: wkatz@xxxxxxxxxx; 'IBIS-ATM'
Subject: [ibis-macro] Re: IBIS Summit
Hi Walter,
Unfortunately, I had to drop off the call today after about 45 minutes,
right when you were getting to the end of the presentation. I was with you
until slide 19:
- SiSoft would like BIRDs 116 and 118 to include a shortcut syntax for
these four models
"Shortcut syntax" brings us right back to "canned circuit models", which I
still don't agree with.
Putting these models into the spec as examples in standard syntax makes
perfect sense to me. I think we should move forward with that.
Thanks,
Ken Willis
Sigrity, Inc.
860-871-7070
kwillis@xxxxxxxxxxx
_____
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Walter Katz
Sent: Monday, February 06, 2012 12:11 PM
To: IBIS-ATM
Subject: [ibis-macro] IBIS Summit
All,
Here are my take-aways as it affects the IBIS-ATM committee.
A Tale of Two Parsers, Bob Ross (Teraspeed)
The IBIS 5.1 .ami parser will only check IBIS 5.1 rules (with some special
code for AMI_Version, and Use_Init_Output).
The IBIS 5.1 .ibs parser will only check IBIS 5.1 rules. To me, this means
that if a .ibs file is Version 3.2, it will not generate any warnings or
errors for IBIS 5.1 keywords.
A System Developer's Perspective on AMI, Greg Edlund (IBM)
This presentation, and the DesignCon Tutorial (8-MP2 AMI Models: How to
tell a Peach form a Lemon) will be an excellent resource for the IBIS
Quality Committee.
Using Function Programming Languages to IBIS AMI Modeling, David Banas
(Altera)
If you close your eyes, you do not have to imagine any changes to the IBIS
Specification to reflect AMI DLLs written in Haskell.
Case Study: IBM 15 Gb IBIS-AMI Model using Dependency Tables, Adge Hawes
(IBM), Walter Katz (SiSoft)
An excellent example of the significance of BIRD 150 (Dependency BIRD) to
AMI Model developers.
Efficient End-to-end Simulations of 25G Optical Links, Sanjeev Gupta
(Avago), Fangyi Rao (Agilent)
The AMI optical link model used Repeaters as described in BIRD 131, with
some possible extensions. SiSoft requested that Fangyi describe any
enhancement that are required to BIRD 131 in order for SiSoft to run these
models.
How did we get here, and how should we go on?, Arpad Muranyi (Mentor)
An excellent presentation that accurately describes the status of BIRDs
122, 116, 117, 118, 129, 144 and 145. Based on discussions I had earlier
in the week with Fangyi, Vladimir, Ambrish and Kumar, I re-affirmed that
SiSoft is is full support of BIRD 117 and 118, with details in my
following presentation.
Ad Hoc Discussion: BIRD116 and "Intrinsic Models", Walter Katz (SiSoft)
I verbally gave the enclosed presentation, which describes the four BIRD
122 Analog models converted to BIRDs 116 and aa8 [External Models]. In
summary, when IBIS 5.2 (BIRDs 116 and 118) is approved, SiSoft will
produce AMI models using this [External Model] format. I believe the only
controversial issue regarding these four BIRD 122 Analog models is the
requirement of a termination resistor for the AMI_Touchstone_Rx. I have
added termination resistors with a value RTref (default 50), which satisfy
the needs for Channel Analog simulators that use S-Parameter arithmetic or
a SPICE step response simulation to generate the Channel Impulse Response.
When BIRDs 116 and 118 are approved by the Open Forum, SiSoft will publish
to IBIS these four [External Model]s.
Walter
Walter Katz
wkatz@xxxxxxxxxx
Phone 303.449-2308
Mobile 720.333-1107
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