RE: [IBIS] Open Drain models

Only the write once write only memories ;-)

Tom Dagostino
Teraspeed Labs
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Beaverton, OR 97008
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-----Original Message-----
From: owner-ibis@eda.org [mailto:owner-ibis@eda.org]On Behalf Of Todd
Westerhoff (twesterh)
Sent: Thursday, March 03, 2005 9:40 AM
To: ibis-users@eda.org; 'ibis'
Subject: RE: [IBIS] Open Drain models


 
Isn't that commonly used on Write-Only Memories?

Todd ;-)

Todd Westerhoff
High Speed Design Group Manager
Cisco Systems
1414 Massachusetts Ave - Boxboro, MA - 01719
email:twesterh@cisco.com
ph: 978-936-2149
============================================

"Always do right.
 This will gratify some people and astonish the rest."

- Mark Twain


-----Original Message-----
From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Beal,
Weston
Sent: Thursday, March 03, 2005 12:34 PM
To: ibis-users@eda.org; ibis
Subject: RE: [IBIS] Open Drain models


read the IBIS specification. 

What does it mean to have an open drain input?


-----Original Message-----
From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Mithlesh
Shrivas
Sent: Thursday, March 03, 2005 5:45 AM
To: ibis-users@eda.org; ibis
Subject: [IBIS] Open Drain models

Hi Experts,
                    Can the "open_drain" pin be treated  as input or output
only ? How can it be defined it in the ibis file? I have generated
Open_drain models and now I need them as input/output type too.

Is the following syntax correct ?
model_type        Input_Open_drain ?
model_type       Output_Open_drain ?

with best regards,
Mithlesh

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