RE: [SI-LIST] : response to semiconductor I/O edge rates

Chan, Michael (Michael.Chan@COMPAQ.com)
Fri, 16 Jul 1999 13:16:04 -0500

The interesting outcome on the low priority of assigning people to work
on the latest version of IBIS from the EDA firms is that the system
engineers will
always be the first to receive the latest version of IBIS models from the
IC vendors while at the same time cannot work on any EDA tool at all !!!!!!

MC

-----Original Message-----
From: Roy Leventhal [mailto:Roy_Leventhal@mw.3com.com]
Sent: Friday, July 16, 1999 12:20 PM
To: si-list@silab.eng.sun.com
Subject: Re: [SI-LIST] : response to semiconductor I/O edge rates

To All, or No One In Particular:

Which came first: The chicken, the egg, or the ruptured duck?

We're sitting here with a programmable part that I can only deal with in a
horse-and-buggy fashion
(funny how that "buggy" word keeps turning up in talking about EDA) on a
current hot project.

Wouldn't even have found out much about the lack of implementation of
programmable devices in IBIS
if I hadn't been working on another issue: A supplier (different one folks)
who
doesn't seem to understand
the [ Pin ] keyword and the necessity to tell the simulator, by pin number,
which I/O cell characteristic to use.

Say, D.C. how long have the conventions for the [ Pin ] keyword been
published?

Damm! N'other burr under my saddle!

Roy

"D. C. Sessions" <dc.sessions@vlsi.com> on 07/16/99 11:13:11 AM

Please respond to si-list@silab.eng.sun.com

Sent by: "D. C. Sessions" <dc.sessions@vlsi.com>

To: si-list@silab.eng.sun.com
cc: (Roy Leventhal/MW/US/3Com)
Subject: Re: [SI-LIST] : response to semiconductor I/O edge rates

Roy Leventhal wrote:
>
> Good points about etch length and edge rates.
>
> Somewhere else in the discussions the issue of programmable drive was also
> brought up. We are using progarmmable drive strength and a fixed series
source
> terminator (selected by daughter card loading) in at least one instance.
>
> Does anyone know a signal integrity simulator that is up to snuff on IBIS
3.2
> especially with regard to the conventions on programmable devices and has
> automated the handling of such parts?

The EDA members of the IBIS committee report that their managements have
assigned IBIS 3.x support a low priority due to lack of customer demand.

--
D. C. Sessions
dc.sessions@vlsi.com

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