[SI-LIST] Re: IBIS-AMI Vendor Support Help
- From: Scott McMorrow <scott@xxxxxxxxxxxxx>
- To: sanjeev_gupta@xxxxxxxxxxx
- Date: Mon, 08 Feb 2010 19:18:24 -0500
Sanjeev
I agree. In fact, I think it would be a wonderful thing if multiple EDA
tools utilizing IBIS-AMI models were able to show correlation to
physical measurements of a complex reference channel with multiple
identifiable defects, and sources of noise. Cross-correlation of that
channel to jitter and BER estimation related measurement instrumentation
would also be a big plus.
regards,
Scott
sanjeev_gupta@xxxxxxxxxxx wrote:
> Hello Arpad,
>
> Thank you for your reply!
>
> Moreover I think it will avoid uncertainty in AMI models if two EDA
> tools provide good correlation.
>
> Best regards and have a nice day
> Sanjeev
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of Muranyi, Arpad
> Sent: Monday, February 08, 2010 3:49 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: IBIS-AMI Vendor Support Help
>
> Sanjeev,
>
> I would recommend the following:
>
> Zero out the package related stuff in the .ibs file to
> basically turn package modeling off in it.
>
> Provide an S-parameter package file separately the same
> way as the channel's S-parameter file would be distributed.
> This could be documented in the .ibs file behind comments.
> The customer will use whatever method to include this in
> their favorite EDA tool.
>
> If there is a need for on-die interconnect parasitic modeling,
> it could be done the same way as the package model described
> in the previous paragraph. The two might even be combined into
> a single S-parameter file if that is more convenient or practical.
>
> I would NOT provide a speculated IBIS syntax or any tool
> specific syntax in the .ibs file for anything, unless a
> clear and unambiguous description is given, so that another
> EDA vendor could reproduce the same results with their products.
>
> For the rest of the buffer description I would encourage
> everyone to use existing IBIS constructs as far as possible.
> And again, if certain features cannot be described that way,
> I would encourage everyone to provide a detailed description
> for what needs to be modeled so that anyone could make their
> own model implementations using their favorite EDA tools
> based on that description.
>
> Thanks for asking the question.
>
> Arpad
> ================================================================
>
>
> -----Original Message-----
> From: sanjeev_gupta@xxxxxxxxxxx [mailto:sanjeev_gupta@xxxxxxxxxxx]
> Sent: Monday, February 08, 2010 5:29 PM
> To: Muranyi, Arpad; si-list@xxxxxxxxxxxxx
> Cc: sanjeev_gupta@xxxxxxxxxxx
> Subject: RE: [SI-LIST] Re: IBIS-AMI Vendor Support Help
>
> Hello Arpad,
>
> What will be your advice to companies who are ramping up on AMI? Should
> they include some non-AMI syntax for package modeling assuming that IBIS
> AMI standard will support these keywords in near future or provide these
> package model as a separate Touchstone file which can be integrated
> within simulation environment?
>
> Best regards
> Sanjeev
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Scott McMorrow
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