[ibis-macro] issues with retimer
- From: Kumar Keshavan <ckumar@xxxxxxxxxxx>
- To: "ibis-macro@xxxxxxxxxxxxx" <ibis-macro@xxxxxxxxxxxxx>
- Date: Wed, 19 Feb 2014 10:22:23 -0800
Hi:
The current redriver/retimer spec in IBIS is artificial and restrictive as I
cannot create a true Retimer model that represents my physical device - without
labeling it as a Redriver. This, however, forces the EDA tool to ignore the
clock ticks sent out by my retimer model - which prevents it from correctly
representing the intermediate eye creating doubts in the users mind.
If I want to model a Retimer in today's specification, I am forced to hand over
part of the regeneration job to the EDA tool. This restricts me from modeling
any non-ideality in the regeneration process.
This can be resolved by allowing a third option for Repeater_Type (besides
Redriver and Retimer) as which allows a True_Retimer model which behaves like
a Redriver in today's specification - but also allows the EDA tool to consider
the clock ticks coming from the Retimer model.
Thanx
kumar
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