Subject: RE: [IBIS] HSPICE encryption (was HyperLynx)
From: Lynne Green (lgreen@cadence.com)
Date: Thu Oct 31 2002 - 08:35:09 PST
A side note on "SPICE". Even if you can "decrypt" an HSPICE
model, the model may not be appropriate for use in another
"spice" simulator. It is safer to obtain a parameter set that
has been specifically qualified in your simulator tool.
Using a "model" (set of parameters) meant for one SPICE simulator
in another can change simulation results, sometimes significantly.
Why is that, you ask? The implementation of model equations (such
as BSIM3) is different in different simulators. When a foundry provides
a "process model", it is targeted to a specific EDA tool (such as
HSPICE,
Spectre, Eldo). Different models for different tools have different
parameter
values, and sometimes even different parameters.
- Lynne
-----Original Message-----
From: Dunbar, Tony [mailto:tony_dunbar@mentorg.com]
Sent: Thursday, October 31, 2002 7:37 AM
To: 'ibis@server.eda.org'
Subject: RE: [IBIS] HSPICE encryption (was HyperLynx)
Just out of interest, what is the encryption scheme used in HSPICE and
similar
tools and how robust are they regarded to be in these days of hackers?
Tony
-----Original Message-----
From: Mohammad Ali [mailto:mohammad.ali@tellabs.com]
Sent: Thursday, October 31, 2002 9:02 AM
To: Stacy L Gore
Cc: ibis@server.eda.org; owner-ibis@server.eda.org; SKWONG@altera.com
Subject: Re: [IBIS] HyperLynx
This is true. But the major limitation with ICX3.0 I found is that it
does not allow encrypted spice IO models. Unfortunately, almost all IC
vendors provide
only encrypted IO models(& transistor library) even under NDA
disclosure
and they only runs with Avanti! hpsice tool. I can't take advantage of
the
new ICX3.0 spice feature in such circumstances. However, the old feature
of extracting the topology in spice format, hooking up spice models
externally and
running under hspice is a work around solution for the above limitation.
-Mohammad
modelStacy L Gore wrote:
>
> Another alternative is the new Mentor ICX3.0 which can co-simulate
> IBIS
and
> SPICE (and VHDL-AMS) models without the need of an external SPICE
simulator
> or license.
>
> Stacy L. Gore
> Hardware Engineering Staff
> Raytheon - Garland Site
> Phone - (972) 205-4208
> Fax - (972) 205-4445
>
>
> Mohammad Ali
> <mohammad.ali@te To: Shee Kian Wong
<SKWONG@altera.com>
> llabs.com> cc:
ibis@server.eda.org
> Sent by: Subject: Re: [IBIS]
HyperLynx
> owner-ibis@serve
> r.eda.org
>
>
> 10/31/2002 08:10
> AM
>
>
>
> > Shee Kian Wong wrote:
> >
> Cadence Specctraquest has a new feature that allow users to mix IBIS
> and SPICE IO models and perform pre- and post-layout analysis. The
> only pre-requisite for this is
>
> 1. a hspice licence should be available
> 2. need some preliminary work to build a macro models for both IBIS
> and spice with some wrap-around lines.
>
> I have successfully used this approach recently.
>
> -Mohammad
>
> > Hi all,
> >
> > Can HyperLynx simulate both IBIS and SPICE models (for example,
> > using SPICE models as driver and IBIS models as receiver)?
> >
> > If it can't, can anyone suggest a tool that can perform this?
> >
> > Regards,
> >
> > Shee Kian
>
> -- ================================================================
> Mohammad W. Ali, Ph.D. Phone 630.378.8924
> Tellabs Operations, Inc. Fax 630.378.8994
> 1000 Remington Blvd. Cell 630.430.1806
> Bolingbrook, IL 60440 Email Mohammad.Ali@tellabs.com
> ================================================================
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-- ================================================================ Mohammad W. Ali, Ph.D. Phone 630.378.8924 Tellabs Operations, Inc. Fax 630.378.8994 1000 Remington Blvd. Cell 630.430.1806 Bolingbrook, IL 60440 Email Mohammad.Ali@tellabs.com ================================================================ ============================================================ The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any reproduction, dissemination or distribution of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer.Thank you. Tellabs ============================================================ ----------------------------------------------------------------- |For help or to subscribe/unsubscribe, email majordomo@eda.org with the |appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or email a request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ----------------------------------------------------------------- |For help or to subscribe/unsubscribe, email majordomo@eda.org with the |appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or email a request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ----------------------------------------------------------------- |For help or to subscribe/unsubscribe, email majordomo@eda.org |with the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or email a request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993
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