George Borkowicz
> -----Original Message-----
> From: chenlanbing [SMTP:[email protected]]
> Sent: Wednesday, April 07, 1999 8:24 PM
> To: [email protected]
> Subject: Re: [SI-LIST] : About HSPICE model
>
> Thanks for help.Now I've the 98.4 ,but it have some problems using IBIS in
> HSPICE.I think IBIS is only used under 100M simulation.The IBIS models
> aren't complete from the IC vendors by now,some datas is error.Few vendors
> provide
> the complete Ver3.1 IBIS models.I think the only way to get the hspice
> model is by NDA.Who can help me?I just want to I/O buffers HSPICE model.
>
> rahcle
>
> D. C. Sessions wrote:
>
> > Kim Helliwell wrote:
> > >
> > > D. C. Sessions wrote:
> > > >
> > > > chenlanbing wrote:
> > > > >
> > > > > HI,
> > > > > I'm working on SI.I like to simulate the transmiter line by
> HSPICE.Now I need the hspice I/O buffer model,such as AMCC 2064.Who can
> help me?
> > > >
> > > > The reason that IBIS was developed in the first place is that
> > > > semiconductor companies like (to pick one at random) VLSI
> > > > Technology keep their process models and to a lesser extent
> > > > their circuit architectures very confidential.
> > > >
> > > > IOW, don't get your hopes up.
> > > >
> > >
> > > On the other hand, I've had reasonable luck getting
> > > such models from vendors under an NDA agreement. The
> > > ability to do this probably depends on your company's
> > > relationship with the vendor; if you buy a lot of
> > > their parts, they'll be more willing to accommodate
> > > you.
> >
> > One thing for sure: it's spotty. A contact at IBM gets
> > absolutely EVERYTHING and was amazed that we had a hard
> > time getting IBIS models; another contact at a small
> > company was impressed at our ability to get anything at all.
> >
> > > My feeling is: a vendor should either give you an
> > > IBIS model or a SPICE model (subject to an NDA). If
> > > they are unwilling to do either, you have to wonder
> > > how they expect you to design their parts in.
> >
> > Violent agreement.
> >
> > > By the way: If you *DO* have an IBIS model, the latest
> > > version of HSPICE will read it directly, so you don't
> > > have to have an HSPICE model to use HSPICE in that
> > > event. You should see the manual for the new version
> > > for details. I make no representations as to accuracy,
> > > ease of use, etc. I've used it, and I think it's
> > > worth a look, anyway.
> >
> > Assuming you have access to 98.4, it's reported to be
> > massively bug-infested. Many of us *don't* have access to
> > 98.4, though -- thanks to Avant's brain-dead support
> > groutp, it's all we can do to get new license files for
> > the dozen or so copies we have before they expire.
> > Asking for license files for upgrades is beyond reason.
> >
> > --
> > D. C. Sessions
> > [email protected]
> >
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