[SI-LIST] Re: optimize Equalization and De-emphasis settings
- From: Cosmin Iorga <ci249534@xxxxxxxxx>
- To: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Tue, 23 Nov 2010 10:02:22 -0800 (PST)
Gert,
I know an algorithm that comes up with the equalization time constants starting
from a step response waveform (typically measured with a TDR/TDT oscilloscope
setup, but it can also be simulated using a similar test bench). It basically
generates a variable number of time-constants, as many time constants as
needed,
depending on the roll-off shape of the measured waveform. If this is something
that fits your application let me know.
Cosmin Iorga,
NoiseCoupling.ocm
http://www.noisecoupling.com
tel: (805) 231-9786
________________________________
From: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>
To: si-list@xxxxxxxxxxxxx
Sent: Tue, November 23, 2010 4:05:19 AM
Subject: [SI-LIST] optimize Equalization and De-emphasis settings
Dear Experts,
is there any way to determin the optimum settings for Equalization and
De-emphasis in a channel simulation?
Situation: I'm running simulations of cascaded channels
(driver-PCB-switch-PCB-switch-PCB-reclocker-PCB-Receiver). Each silicon
has analog equalization and de-emphasis, only some have ECR, thus i
can't just simulate section by section.
Simulation takes very long, thus I would like to start with optimum
settings. I'm looking for some technique or algorithm to determin the
desired amount of equalization just by examining each silicon's input
signal (Eye, spectrum, timing...).
Any thoughts or paper reference is appreciated.
BR
Gert
http://www.mesago.de/de/SPS/home.htm
Besuchen sie uns auf der SPS/IPC/Drives in Nürnberg, vom 23. - 25. November
2010, in Halle 10, Stand 130.
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