RE: [SI-LIST] : About HSPICE model

George Borkowicz (jbor@nortelnetworks.com)
Fri, 9 Apr 1999 08:13:37 -0500

Get yourself an IBIS to Spice converter available for free from Intusoft web
site. This tool is based on a template that you can provide to fit your
Spice syntax. Besides one supplied with the tool Orcad/Microsim provides
one (free) for their PSpice. In every case you will probably have to tweak
the resulting .lib file. However, if you understand the structure of IBIS
model this is not a big deal (but a big nuissance). In the PSpice case for
example I had to remove some extra entries from the beginning and the end of
most tables and reverse the order of some (PSpice requires monotonically
increasing entries). Have fun!

George Borkowicz

> -----Original Message-----
> From: chenlanbing [SMTP:rachel.chen@huawei.com.cn]
> Sent: Wednesday, April 07, 1999 8:24 PM
> To: si-list@silab.eng.sun.com
> 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
> > dc.sessions@vlsi.com
> >
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