RE: [IBIS-Users] on-die termination ... one more time

It would be better to put a pull up resistor in the powerclamp and for
completeness any pulldown resistor would go in the groundclamp.  That way
the warnings to away.

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 RODRIGUEZ_LECONA_RAMIRO
Sent: Thursday, February 17, 2005 11:02 AM
To: ibis-users@eda.org; ibis-info@eda.org
Subject: [IBIS-Users] on-die termination ... one more time


Hi all,

    Thank you by your answers. I am generating an IBIS model that includes
an input structure with a pull-up resistor. I include the pull-up resistor
characteristics in the ground clamp curve but when I check the IBIS file
with IBIS parser (IBISCHK3 v3.2.9) the parser  gives the warning: “WARNING –
Model Input02: GND Clamp : Maximum value never becomes zero”.
    Michael Mirmak said that there is no requirement for all clamp curves to
“reach the zero value” then what is the cause for this Warning?

                                      Thank you

Best Regards

Ramiro
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