RE: [IBIS-Users] logic0 and logic1 problem in IBIS models

From: Tom Dagostino <tom_at_.....> Date: Mon Apr 11 2005 - 09:51:19 PDT · This archive was generated by hypermail 2.1.8 : Mon Apr 11 2005 - 09:57:23 PDT

Akhilesh

The logic 1 and logic 0 states depend on the load attached to the buffer.
If the load is an open circuit then the logic 0 will be the voltage in the
pulldown table where the current is zero.  The 1 will be the voltage in the
pullup table where the current is zero.  You can construct load lines and
apply those to the IV tables to predict the output voltage for any load.

Regards,

Tom Dagostino
Teraspeed Labs
13610 SW Harness Lane
Beaverton, OR 97008
503-430-1065
http://www.teraspeed.com
tom@teraspeed.com

Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
401-284-1827

Teraspeed is the registered service mark of
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-----Original Message-----
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org]On
Behalf Of Akhilesh CHANDRA
Sent: Monday, April 11, 2005 8:09 AM
To: ibis-users@eda.org
Cc: Akhilesh CHANDRA
Subject: [IBIS-Users] logic0 and logic1 problem in IBIS models

Hello ,

  I am working on one of my differential cells. When I validate my IBIS
models from two different simulator then I got two different logic 0 and
logic1 values. To find out it's problem of simulator or my models I must
know what are the logic0 and logic1 according to the models. Can any one
have any idea how we can extract logic0 and logic1 from the model files.

  I am highly blocked due to this issue. Your help is deeply appreciated.

Regards
Akhilesh

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