Ahmed,
It might be possible to do that through the [External Model]
approach. But the question is how would the three states be
“identified” with a normal “IBIS stimulus”. IBIS has a logic
‘1’, logic ‘0’ state for driving and a receive state. You
might make a model which uses the receiving state as your
third state, but the question still remains, how would a
simulator transition between any of those three states.
Currently IBIS does not have provisions to switch between the
two states of driving and the receiving state.
So this would be challenging, and may need some tool specific
non-IBIS compliant deviations to work.
I hope this helps,
Arpad
==================================================================
From: ibis-users-bounce@xxxxxxxxxxxxx [mailto:ibis-users-bounce@xxxxxxxxxxxxx] ;
On Behalf Of Ahmed Essam
Sent: Sunday, October 30, 2016 2:57 PM
To: ibis-users@xxxxxxxxxxxxx; ibis@xxxxxxxxxxxxx
Subject: [ibis-users] IBIS model for CPHY MIPI standard
Dear ALL,
I have faced a problem while creating IBIS model for CPHY MIPI standard.The
standard has 3 states on the transmission line (High,Low,Midlevel) .
The transmission line is driven to high state through pull up device,driven to
low state through pull down device,driven to mid level state through both pull
up & pull down devices.
I wonder if IBIS standard can model CPHY standard "driving the transmission
line to 3 states" .
Thanks,
Ahmed
