Subject: [IBIS-Users] Eldo runs, and R,L,C package effect.
From: Lior Dagan (liord@saifun.com)
Date: Thu Dec 11 2003 - 10:01:20 PST
Hello wise people.
I am running Eldo as a simulator for extracting ibis data. I use it to verify the results as well (running eldo on the circuit modeled AND on ibis model, and comparing them)
I have encountered some difficulties.
1. How does ibis determine the vinh/vinl for an output buffer? How does it decide to change states?
2. I get a large mismatch in delay, could this be the result of even spaced V/T samples?
3. I tried to change R_pkg (pins have NA on all of them) from 3m to 3E6, and it showed no effect on my eldo. Can anyone tell me why?
4. @ r_fixture=70 ohms I get a large jitter, @ r_fixture=1000, I get a much smaller jitter, how does it happen?
Thanks,
Lior Dagan.
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