[SI-LIST] Re: FW: SI models at MGH speeds

Sunil,

Multi-Giga Hz IBIS model is very much possible now with IBISv4.1 using
the multi-lingual extension (VHDL-AMS). We have demonstrated this with
3.125Gbps SerDes with excellent lab correlation. See:

http://www.mugweb.org/conferences/2005/awards.html#BEST (look under
High-Speed). Free registration required to download.

Most vendors give your HSPICE models because that is all they are
familiar with currently. But that may not be the solution to use if you
are doing post layout simulations etc. We are pushing this modeling
scheme to higher datarates as we speak.

Regards,
Syed
Cisco Systems, Inc

> 
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of sunil.mekad@xxxxxxxxx
> Sent: Wednesday, May 25, 2005 9:06 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] SI models at MGH speeds
> 
> 
> Hi,
> 
> Can anyone tell me why it is difficult to generate IBIS models for
> mutli-giga hz devices. Most of the vendors give us HSPICE models. Is it
> something to do with difficulty in accurate characterisation of V/I
> curve at such high frequencies (>5GHz)?
> 
> In any case are HSPICE models also the correct solution? Presuming such
> interfaces also have pre-emphasis and de-emphasis. Cadence suggests the
> use of macromodels for MGH applications however, is it possible to
> convert HSPICE models to accurate macromodels for simulation in
> SPECCTRAQUEST for >5GHz application?
> 
> Thanks
> Sunil
> 
> 
> 
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