[SI-LIST] Re: IBIS modeling
- From: "BIBICHA" <f_bouchra@xxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Mon, 15 Oct 2001 11:15:42 -0400
Ken:
It seems that W32.Sircam virus is e-mailed with the same message
"I send you this file in order to have your advice", "See you later,
thanks."
I got so many of them in the past, from people that I did not know.
I think the virus uses people's e-mails and automatically send itself
around.
What is important is to not open/delete the file.
Good luck
Bouchra
----- Original Message -----
From: "Ken Cantrell" <Ken.Cantrell@xxxxxxxxxxx>
To: <scott@xxxxxxxxxxxxxxxx>; <chris.cheng@xxxxxxxxxxxx>
Cc: <si-list@xxxxxxxxxxxxx>
Sent: Monday, October 15, 2001 10:48 AM
Subject: [SI-LIST] Re: IBIS modeling
>
> All,!!!!
> Norton Anti-virus just detected the W32.Sircam.worm@mm (whatever that
means)
> on the attachment micro vias.doc, on my incoming e-mail. My particular
> e-mail is from someone called Joost Westland. Attached is the file on
micro
> vias. Wants input: "I send you this file in order to have your advice",
> "See you later, thanks." Subject is micro vias. Delete.
> Ken
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx
> [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Scott McMorrow
> Sent: Thursday, October 11, 2001 6:18 PM
> To: chris.cheng@xxxxxxxxxxxx
> Cc: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: IBIS modeling
>
>
> Chris,
>
> IBIS cannot handle state dependent preemphasis
> or state dependent receiver termination. These can
> only be simulated correctly with SPICE.
>
> IBIS is useful only for "vanilla" flavored LVDS drivers
> and receivers.
>
> regards,
>
> scott
>
>
> Chris Cheng wrote:
>
> > I am always curious about how can IBIS handle circuits
> > like driver preemphasis or active state dependent
> > receiver termination.
> > Chris
> >
> > -----Original Message-----
> > From: Jon Powell [mailto:jpowell@xxxxxxxxxxxx]
> > Sent: Thursday, October 11, 2001 2:32 PM
> > To: chris@xxxxxxxxxx; khalida@xxxxxxxxxxx
> > Cc: si-list@xxxxxxxxxxxxx
> > Subject: [SI-LIST] Re: IBIS modeling
> >
> > I have done some LVDS models and have NOT had any (good) luck
> > in simulating them as single ended buffers.
> > Let me re-phrase that. Most of the SPICE models that I have run do
> > not give correct (or self-correlating) results if you don't put the
> > series current return resistor into the LVDS circuit. If you try to
> > simulate this resistor with a resistor to some constant node you also
> > get bogus results. In order to get correct SPICE results you have to
> > simulate
> > both drivers at the same time with the correct termination.
> >
> > I have seen this result in 3 independent LVDS drivers from different
> > vendors.
> >
> > For an example LVDS IBIS model, you might check out the National or
Altera
> > web pages.
> >
> > jon
> >
> > > -----Original Message-----
> > > From: si-list-bounce@xxxxxxxxxxxxx
> > > [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Chris Brewster
> > > Sent: Thursday, October 11, 2001 10:32 AM
> > > To: khalida@xxxxxxxxxxx
> > > Cc: si-list@xxxxxxxxxxxxx
> > > Subject: [SI-LIST] Re: IBIS modeling
> > >
> > >
> > > Khalid,
> > >
> > > Most of the information describes the process for extraction
> > > of a Single
> > > Ended buffer. With LVDS, you have to treat each output as if
> > > it were a
> > > single ended buffer and then combine them to create a
> > > differential model.
> > >
> > > The literature from the IBIS summit by Hegazy is a good place
> > > to start.
> > >
> > > http://www.eda.org/pub/ibis/summits/jan01/hegazy.zip
> > >
> > > regards,
> > >
> > > -Chris
> > >
> > >
> > > At 09:01 AM 10/11/2001 -0700, Khalid Ansari wrote:
> > >
> > > >Hi all,
> > > >
> > > >I am looking to create IBIS models for my LVDS I/Os. I already
> > > >have Hspice models created. Is there any good literature on how
> > > >to create IBIS models out of Hspice models. I haven't had a chance
> > > >to work with IBIS in the past so any introductory literature will be
> > > >helpful. I guess the IBIS version I will be using is 3.2
> > > with scripts
> > > >created by North Carolina State University.
> > > >
> > > >Thanks in advance,
> > > >Khalid
> > > >
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>
> --
> Scott McMorrow
> Principal Engineer
> SiQual, Signal Quality Engineering
> 18735 SW Boones Ferry Road
> Tualatin, OR 97062-3090
> (503) 885-1231
> http://www.siqual.com
>
>
>
>
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