Re: [IBIS] BIRD119: IBIS-AMI New Reserved Parameters

  Several quick comments.

"Samples_Per_Bit"

    * Is this a practice that we want to encourage?
          o Seems to me that fractional sample rate conversion required
            for models with dissimilar Samples_Per_Bit values will
            become nightmare for the EDA tool.
                + On the other hand, the EDA tool is probably better
                  equipped to handle this than the model itself.
                + But really shouldn't the model need to handle this?
    * Seems to me that what is also needed is a model range of
      applicability. This could be specified as a BW, a Bit Rate, or in
      some other means, so that the model is driven beyond it's means.

Tstonefile

    * What would be the node mapping for Multi-path simulations of
      crosstalk?
          o This is where Agilent-standard even/odd port numbering gets
            difficult.
                + Personally I prefer 1-to-N/2, N/2+1-to-N mapping
    * Where is the termination network located for Tx and Rx?
          o Is it embedded in the network s-parameters.
    * How is Termination voltage accounted for with the network
      s-parameters for non-DC-blocked applications?
    * Assuming that the summer input and output is high impedance, is
      Touchstone port impedance on the Silicon side also high impedance?
          o Is the termination assumed to be at this point?
    *

Scott McMorrow
Teraspeed Consulting Group LLC
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(401) 284-1827 Business
(401) 284-1840 Fax

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On 10/6/2010 11:54 AM, Mirmak, Michael wrote:
>
> The enclosed BIRD 119, IBIS-AMI New Reserved Parameters, is
> distributed on behalf of Walter Katz, Mike Steinberger and Todd
> Westerhoff of SiSoft. It will be introduced at the next IBIS Open
> Forum meeting.
>
> A full list of BIRDs, their status and association with particular
> IBIS versions may be found at http://www.eda.org/ibis/birds/.
>
> Please note that the enclosed file is a "pointer" to a separate PDF
> file of the BIRD text, as the IBIS e-mail reflector does not permit
> redistribution of binary files. The enclosed file is identical to the
> ASCII file on the BIRD list at the URL above. The complete BIRD text
> is available at:
>
> http://www.eda.org/ibis/birds/bird119/bird119.pdf
>
> Michael Mirmak
>
> Intel Corp.
>
> Chair, IBIS Open Forum
>
>
> --
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