Subject: [IBIS] RE: Differential model question
From: Muranyi, Arpad (arpad.muranyi@intel.com)
Date: Tue Aug 05 2003 - 10:48:45 PDT
Another related question:
It seems that the parser doesn't follow through the model
selector keyword. If I have the differential model that I
talked about below called through a [Model Selector], the
parser thinks it is a single ended model, and it spits out
warnings about the differential [Receiver Thresholds] being
not needed.
Should this be fixed in the parser?
Arpad
===========================================================
-----Original Message-----
From: Muranyi, Arpad
Sent: Tuesday, August 05, 2003 9:49 AM
To: 'ibis@eda.org'
Subject: Differential model question
Hello,
This is a question on making a differential model.
My understanding is that if there is a [Model] in an
IBIS file, it can be referenced by the pin list both
as a single ended model and it can also be associated
through the [Diff Pin] keyword as a differential model,
all at the same time.
Now, add the [Receiver Thresholds] keyword into the
picture. Unfortunately, this keyword goes inside a
[Model], and it seems that its content must correspond
to how that [Model] is referenced, single endedly or
differentially.
Was this done intentionally? It seems quite inconsistent
with the earlier notion that a single [Model] can be used
both ways. Or, is this a parser problem?
Thanks,
Arpad
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