RE: [IBIS-Users] Multiple Supply voltages in IBIS


Subject: RE: [IBIS-Users] Multiple Supply voltages in IBIS
From: Stacy L Gore (Stacy_L_Gore@raytheon.com)
Date: Tue Jul 09 2002 - 12:19:53 PDT


On a related subject---
Does anyone know what the future intent of the [Model Selector] section?
I was hoping that the tool vendors had some plans to utilize this with some
external trigger to use different I/O models within the same IBIS model
based on circuit configuration (like supply voltage).
I am really not sure what the section was ever intended to be used for.

Stacy Gore
Raytheon

                                                                                                                                      
                      "Lynne Green"
                      <lgreen@cadence.com> To: "Senthilkumar.Kalidoss" <skalidas@idt.com>, <ibis-users@server.eda.org>
                      Sent by: cc:
                      owner-ibis-users@ser Subject: RE: [IBIS-Users] Multiple Supply voltages in IBIS
                      ver.eda.org
                                                                                                                                      
                                                                                                                                      
                      07/09/2002 01:15 PM
                                                                                                                                      
                                                                                                                                      

Hello, Senthil,

It is necessary to make two different models. The two models will
have different values for some of the voltage keywords.

The related keywords are [Voltage Range], [Pullup Reference],
[Pulldown Reference], [POWER Clamp Reference], and
[GND Clamp Reference].

Best regards,
Lynne

Dr. Lynne Green
Senior Member of Consulting Staff
Cadence Design Systems, Inc.

"All the world's an analog stage, whereon digital plays bit parts."

-----Original Message-----
From: Senthilkumar.Kalidoss [mailto:skalidas@idt.com]
Sent: Tuesday, July 09, 2002 10:21 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Multiple Supply voltages in IBIS

  I have IOs working with two different supply voltages. I could specify
only one sweep voltage in one xxxx.s2i file.
I use s2ibis2.1 to generate IBIS model. Can you please suggest me whether
it is possible to create only one IBIS model and how?. Or is it better to
create two models for two different voltages?
Thank you,
-------
Senthil
Integrated Device Technology. Inc

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