[SI-LIST] Re: How to generate unloaded driver waveform (error correction)

Sorry, That should have Read:

This function is exactly what the SI simulation tool should be doing,
figuring out how to mimic an unloaded driver from the properly defined IBIS
data. In general it does this by knowing the DC characteristics (The IV
curves) and sample VT characteristics that have no or low capacitive
loading.

jon

(changed second use of DC to VT)

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Jon Powell
Sent: Tuesday, June 24, 2003 8:05 AM
To: John@xxxxxxxxxxxx; silists
Subject: [SI-LIST] Re: How to generate unloaded driver waveform


This function is exactly what the SI simulation tool should be doing,
figuring out how to mimic an unloaded driver from the properly defined IBIS
data. In general it does this by knowing the DC characteristics (The IV
curves) and sample DC characteristics that have no or low capacitive
loading.

jon

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of John Lin (ªL´Â·×)
Sent: Tuesday, June 24, 2003 3:48 AM
To: silists
Subject: [SI-LIST] How to generate unloaded driver waveform


Dear all SI gurus,

How to compose a unloaded driver waveform at die from a given IBIS driver
model?   I think inside the IBIS model, the VT tables provides the
information of  driver waveforms with specific test loads, for example, 50
ohms pull up /pull down.

However, when the driver drive a transmission line , ie, system load., the
unloaded driver waveform  shall be used  instead of the test loaded driver
waveform.

Thank you for your helps in advance.


John Lin

Quanta Computer Inc.,Taiwan, R.O.C.
Email: John@xxxxxxxxxxxx
Tel: 886+3+3272345 ext. 5183





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