[SI-LIST] Re: XTK model for I2C bus
- From: Guasti Giovanni <Giovanni.Guasti@xxxxxxxxxx>
- To: "'diggidydog2003@xxxxxxxx'" <diggidydog2003@xxxxxxxx>,si-list@xxxxxxxxxxxxx
- Date: Tue, 1 Apr 2003 12:44:51 +0200
Try to increase a little the slope of GND_Clamp curve.
I hope this could help you,
By!
(another way is to simulate the bus with Hspice using the IBIS model
directly)
Giovanni Guasti
Electrical Physical Design
Italtel, Via Reiss Romoli
Castelletto Settimo Milanese (Mi)
cap. 20019 tel. 39 0243888258
-----Original Message-----
From: SI Eng [mailto:diggidydog2003@xxxxxxxx]
Sent: Tuesday, April 01, 2003 11:32 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] XTK model for I2C bus
Gurus :
I'm trying to simulate a heavily loaded I2C bus (2 wire serial bus) with a
mixture of I2C and non I2C input devices on it. I can't get XTK to correctly
translate the IBIS model of the I2C I/O - I think there's some input
filtering and spike suppression circuitry on the I/O that it doen't like.
When I run ibis2xtk, the resulting XTK model gives erroneous results when I
try using it. The log file states the following problems :
INFO: Removing constant voltage segment at 0V [1]
ERROR: Constant voltage segments (Removed 1) found in GND_Clamp curve
Any ideas ? The IBIS model in question is the Philips PCA9556.
Thanks,
Douglas
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