RE: [IBIS-Users] Overshoot and Undershoot issue

Dear Arpad,

Thanks for correct me. You are correct. I ask a stupid question. I will check back with my group again regarding this.

If let say, now no more in input pins but output / I/O pins, will the overshoot shows in the model data?

Rdgs

yylau

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From: "Muranyi, Arpad" <arpad.muranyi@intel.com>
To: <ibis-users@eda.org>
Subject: RE: [IBIS-Users] Overshoot and Undershoot issue
Date: Tue, 16 Aug 2005 08:36:29 -0700

Yylau,

 

Overshoot is a phenomena in the signal's quality.

A model can effect how much overshoot you will see

in a simulation depending on what the clamps look

like, but the overshoot itself is not in the model,

it is in your signal that the model receives.

 

Therefore IBISchk will not show any overshoot in

the model either.

 

Please think about this a little and then reformulate

your question, because it really doesn't make sense

the way you asked it.  Or did I miss something?

 

Arpad

======================================================

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From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of lau yy
Sent: Tuesday, August 16, 2005 12:59 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Overshoot and Undershoot issue

Dear ALL,

 

 

Recently, my group member done some testing on the chip. And found overshoot and undershoot in the Input pins. But this is not shown in the IBIS model data.

 

Is it that mean the model that we built is not accurate? or there were some other effect need to take in to account?

 

ANother question here : How do the model looks when there were overshoot and undershoot? Can we know this by using IBISCHK?

 

 

Thanks

 

Rdgs

yylau 

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