RE: [IBIS-Users] Rising and Falling Waveform

I just realized that you may have been asking about the
starting time of the waveforms.  The spec doesn't say
that it has to start at zero.  But various simulators 
do different things, so beware!  Some normalize everything
to zero other may not do that.
 
Arpad
==========================================================

________________________________

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Muranyi, Arpad
Sent: Friday, July 15, 2005 8:42 AM
To: ibis-users@eda.org
Subject: RE: [IBIS-Users] Rising and Falling Waveform


yylau,
 
No.  The requirement is not zero.  The starting and ending points
are determined by the IV curve / load line intersection, where
the IV curve stands for all clamps and one pullup or pulldown
IV table added together, and the Rfixture Vfixture combination
of the waveform that is being investigated.
 
Arpad Muranyi
Intel Corporation
==================================================================

________________________________

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of lau yy
Sent: Friday, July 15, 2005 2:30 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Rising and Falling Waveform


Dear ALL,
 
 
Regarding these 2 waveforms, is there the starting point (rising) and ending point (falling) should be '0' or nearly '0' ?
 
But I got 1 model with these 2 point far away from '0', and it still pass the ibischk3. 
 
So, do the model wrong or correct? And what will cause the points not start or end at '0'?
 
 
Rdgs
yylau
|------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo_ f rom _eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or email a written request to ibis-request_ f rom _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 just 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 written 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