[ibis-macro] Analog BIRD comparison
- From: Ambrish Varma <ambrishv@xxxxxxxxxxx>
- To: IBIS-ATM <ibis-macro@xxxxxxxxxxxxx>
- Date: Tue, 17 Jan 2012 16:21:14 -0800
Hi Arpad,
Thanks for putting these slides together. I would like to clarify something
that you mentioned during the ATM call and also point out on slide 3 of the
Analog BIRD comparison pdf. BIRD 144.1 does not describe a 'predefined circuit
topology (that) eliminates the need for an IBIS-ISS subcircuit'. Only the
latter part of the statement is accurate - it eliminates the need for an
IBIS-ISS subcircuit when an external tstone file is being pointed to. It simply
allows the model maker to directly refer the tstone file from the external
model keyword. There is no attempt to pre-define a circuit or present a canned
solution for any analog circuit.
Another aspect of BIRD 144 is to allow user defined corners for analog models
(described with a tstone file) for more than the allowed 3 corners *without*
the need of an AMI parameter file. This functionality would keep the analog
model entirely within the IBIS file and away from the AMI part of the
specification.
Thanks and Regards,
Ambrish.
Ps: I changed the subject line to better reflect the topic of discussion.
Ambrish Varma | Member of Consulting Staff
P: 978.262.6431 www.cadence.com
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx]
On Behalf Of Muranyi, Arpad
Sent: Tuesday, January 17, 2012 2:23 PM
To: IBIS-ATM
Subject: [ibis-macro] Re: IBIS-ATM teleconference - Agenda for 1/17/2011
I prepared a couple of slides to aid our
discussion today.
These slides are an attempt to summarize the
various arguments (pro/con) with the goal of
helping our decision process at the end. I
intend to keep adding more to these slides as
we go with our discussions.
Thanks,
Arpad
================================================
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx]
On Behalf Of Muranyi, Arpad
Sent: Tuesday, January 17, 2012 10:58 AM
To: IBIS-ATM
Subject: [ibis-macro] IBIS-ATM teleconference - Agenda for 1/17/2011
Time: January 17, 2012 Noon US Pacific Time
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Meeting schedule for the next few weeks:
- January 24 yes
- January 31 No
- February 7 yes
We need a volunteer to take minutes today.
Agenda
======
1) Opens
2) Call for any related patent disclosures
3) Review of ARs:
Walter: Submit updated BIRD 123 to Open Forum
- done (This is 123.2)
Arpad: Submit Usage Out correction BIRD draft to Open Forum
- done
Any other AR-s?
Old ARs:
Arpad: Review the documentation (annotation) in the macro libraries.
- deferred until a demand arises or we have nothing else to do
4) Analog BIRDs discussion
BIRD 122 (Walter)
- working documents: ISS_Buffer_BIRD.doc (May 17, 2011)
ISS_Package_BIRD_RevA.doc (May 27, 2011)
BIRD 116, 117, 118, 129 for buffer modeling (Arpad)
BIRD 125 for package modeling (Arpad)
BIRD 144, 145 (Cadence)
5) BIRD 121.1, data management parameters (file support) (Walter)
- discussion, questions, comments?
6) BIRD 124.1, dependency table (Walter)
- questions, comments?
7) Info, Out, InOut BIRD (Arpad)
- latest wording includes "in order to be compliant with this
specification, Model_Specific parameters ... must not ...",
and omits the word "simulation" so it's meaning doesn't have
to be defined
- any comments, questions on this draft?
8) "Resolution" (Walter)
- do not include 5.0 rule descriptions in the 5.1 specification
Thanks,
Arpad
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