Re: multi-staged drivers, etc.

Greg:

I also agree that it would be nice to see some simulation
comparisons of networks using and "identical" model
constructed with and without the multi-staged switching
capability.

Your definition of multi-staged looks good to me. We
have not addressed models of drivers with feedback.

Bob Ross
Interconnectix

> From: "Edlund, Greg" <Edlund@EXCHANGE.eng.pko.dec.com>
> To: "'ibis@vhdl.org'" <ibis@vhdl.org>
> Subject: multi-staged drivers, etc.
> Date: Thu, 7 Nov 1996 08:26:04 -0500
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> I'm jumping into the middle of this discussion, so I plead ignorance if
> someone has already addressed this question.

> Does anyone have an overlay of lab and simulation data that
> quantitatively demonstrates the accuracy of the standard ibis i-v curve
> method and/or rising waveform method for multi-staged drivers? (My
> understanding of "multi-staged" is that the output stage is divided up
> into portions that turn on and off in succession during the excursion
> from one output level to the other.) I think drivers that employ some
> kind of feedback mechanism may be interesting to look at, too. It would
> be necessary to check the waveforms at the driver and receiver for a
> standard load and maybe a handful of typical net topologies.

> ----------
> Greg Edlund , Principal Engineer
> Alpha Server Signal Integrity
> Digital Equipment Corp.
> 129 Parker St. PKO3-1/20C
> Maynard, MA 01754
> (508) 493-4157 voice
> (508) 493-0941 FAX
> edlund@eng.pko.dec.com
Received on Thu Nov 7 18:59:39 1996