[SI-LIST] Re: Generic receiver equalization setting
- From: <colin_warwick@xxxxxxxxxxx>
- To: <Gert.Havermann@xxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Sun, 27 Jun 2010 18:52:42 -0600
Hi Gert,
Glad you like our Channel Simulator's stat mode. :-) My colleague Sanjeev Gupta
wrote an article "Continuous-time equalizers improve high-speed serial links:
You can design an effective serial-channel equalizer in a few minutes" in EDN:
http://www.edn.com/article/457627-Continuous_time_equalizers_improve_high_speed_serial_links.php
Looks like we should write a sequel for digital filter design in this
application... Meantime, a good generic starting point might be:
http://en.wikipedia.org/wiki/Filter_design
hth
-- Colin Warwick
High Speed Digital Design Flow Manager, Agilent EEsof EDA
Blog: http://signal-integrity.tm.agilent.com
Information Exchange for IBIS Model Users: http://www.ibis-user.org
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Havermann, Gert
Sent: Friday, June 25, 2010 10:43 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Generic receiver equalization setting
Dear Experts,
I need to run some channel simulations, and the SPICE models don't seem
to work together. While I'm working on a solution I would like to run a
statistical channel simulation using generic driver models in ADS. These
work well, and I never had problems in the past, but this time I'm
struggeling with the correct rceiver equalization setting.
Usually I just take the number of taps and enable the adaptive
equalization, but the Silicon I have to use seems to have a different
(maybe analog) equalization. They specify max. 12dB Input equalization.
In ADS I can choose the RX-equalizer to be: CTLE (setting poles and
zeros), FFE (setting pre and postcursor Taps) and/or DFE (setting Taps).
Now my question is: Which one to choose, and how to setup 12dB? Is there
any convertion algorithm or table saying e.g. "12dB=xTaps DFE"?
Any help or link to useful information to equalization papers or
appnotes is appreciated.
Many thanks
BR
Gert
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