Re: [SI-LIST] : IBIS Modeling

D. C. Sessions wrote:

> skolli@smartm.com wrote:
> >
> > Hello there!
> > The company I work for has assigned me the duty of creating
> IBIS
> > models for the
> > memory modules(SIMMs, DIMMs, etc) that we make.
> >
> > Is there some body out there who has done this in the past?
> Does IBIS
> > even have
> > capabilities of modeling this kind of modules? How do you go about
> doing
> > these kinds of
> > models. Is there material out there that explains how to measure all
> the
> > different I/V characteristics?
> > Do I just take the device models and plug them in and say here is
> the model
> > for the module?
> > Any help would be much appreciated.
>
> First off, this really belongs on the IBIS reflector. I've taken the
> liberty of copying it and directing followups there.
>
> In brief, the answer is that IBIS device models are *not* good enough.
>
> You absolutely need to model the substrate and the terminators (DIMM
> series resistors) on them. IBIS 3.1 includes the capability of
> defining Electrical Board Descriptions, which are basically simplified
>
> netlists of the PWB. The examples given are in fact memory modules.
>
> --
> D. C. Sessions
> dc.sessions@tempe.vlsi.com

 
Received on Wed Mar 25 04:20:44 1998