[ibis-macro] Re: BIRD-124: Dependency tables - question?
- From: "Walter Katz" <wkatz@xxxxxxxxxx>
- To: "'Taranjit Kukal'" <kukal@xxxxxxxxxxx>, "'IBIS-ATM'" <ibis-macro@xxxxxxxxxxxxx>
- Date: Mon, 17 Jan 2011 09:56:24 -0500 (EST)
Kukal,
Your first sentence is not correct, it should have said:
"Looks like the Intent is to associate Analog IO model (different IO-model
strengths) to AMI-parameter so that correct Analog IO-model is picked when
s specific portion of AMI-code gets executed."
Point being that the user configures the registers in a model, and that
the registers in the model not only determine how the algorithmic model
works but also determine the analog model needed to generate the impulse
response of the channel for the algorithmic simulation.
Walter
From: Taranjit Kukal [mailto:kukal@xxxxxxxxxxx]
Sent: Monday, January 17, 2011 9:17 AM
To: wkatz@xxxxxxxxxx; 'IBIS-ATM'
Subject: RE: [ibis-macro] Re: BIRD-124: Dependency tables - question?
Hi Walter,
Help me understand this further. Looks like the Intent is to associate
Analog IO model (different IO-model strengths) to AMI-parameter so that
correct portion of AMI-code gets executed according to Analog IO-model
that is picked.
However, what I fail to understand is that how this association gets
utilized. If the user has to manually set a Key-parameter as per the IBIS
buffer-strength to allow picking of dependent parameters then why are not
let ami-code do it (Let tables be coded inside of AMI dll).
To me, it looks like "Good to have" rather than a real need. Please
explain with small example if I am missing the point.
rgds
..kukal
_____
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Walter Katz
Sent: Thursday, January 13, 2011 8:32 PM
To: Taranjit Kukal; 'IBIS-ATM'
Subject: [ibis-macro] Re: BIRD-124: Dependency tables - question?
Kukai,
The impulse response of the channel must be determined before the AMI DLL
is called. The AMI file contains the switches that program the Tx or Rx
model. The value of these switches determine the analog model of the
driver that is required to determine the impulse response of the channel.
Walter
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Taranjit Kukal
Sent: Thursday, January 13, 2011 2:11 AM
To: IBIS-ATM
Subject: [ibis-macro] BIRD-124: Dependency tables - question?
Hi,
The dependency tables would be useful only if we want to keep same
AMI-code (dll) and just change the dependency outside of the code using
.ami file.
However, I do not see this as common use-model - I would assume that all
such dependency should be handled inside of c-code (Algorithmic...) and
that we should avoid overloading of .ami file such tables. AMI-code should
be able to handle such dependency by coding the right values for dependent
parameters based on Key parameters in ami file.
Please let me know if I am missing a use-case where this cannot be handled
inside the dll.
rgds
..kukal
Taranjit Kukal | Product Engineering Architect
P: 91 120 3984000 <http://www.cadence.com/> www.cadence.com
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