[SI-LIST] AW: Number of bits to simulate
- From: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>
- To: "Roopesh Badala" <roopesh.badala@xxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Tue, 6 Dec 2011 16:30:59 +0000
Roopesh,
if the eye looks bad for long patterns, you shouldn't ask how to test to make
it look better, you should take care of the problems in your channel.
The Longer the bit sequence, the better you see how good your channel is.
Testing with less bits will not solve anything.
BR
Gert
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-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im
Auftrag von Roopesh Badala
Gesendet: Dienstag, 6. Dezember 2011 15:02
An: si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Number of bits to simulate
Hello Experts,
We are simulating a LVDS channel of 800Mbps datarate using ibis models &
cadence channel analysis tool utilities.
We are struck at selecting number of bits for simulation.
How do you decide on the PRBS pattern length for simulation.
with 32 bits the eye opening is good. but for higher pattern length the eye
opening is bad.
Is there any relation between the channel length or data rate to number of bits
to simulate.
kindly advise.
Thanks in advance
Roopesh.
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