Summary of Features in SerDesDesign_Tools
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Subject: Summary of Features in SerDesDesign Tools
Author: John Baprawski; John Baprawski Inc. (JB)
Date: Oct. 7, 2021
This paper discusses features on the web site: https://www.serdesdesign.com
A SerDes system for a single channel has the typical structure shown in this figure.
See details in
About the SerDes System Tool...
Many of the features available in the SerDesDesign.com tools are free others are available for a
fee. This document is a summary of some of the SerDesDesign.com features for SerDes
System Channel Simulation using the web page:
serdes-system-tool
.
Channel Impulse Background
All channel simulators (CS) based on the IBIS standard are able to model SerDes systems as
shown in the above figure. SerDes system contain transmitters (Tx), receivers (Rx) and a
differential channel. Oftentimes, parts of the channel are defined using S-parameters.
Necessarily, S-parameters are defined with an upper frequency maximum. Per the IBIS
definition the total channel includes all content between the output of the Tx behavioral (AMI)
model and Rx behavioral (AMI) model. This includes the Tx IBIS Buffer, Tx Pkg, Channel, Rx
Pkg and Rx IBIS Buffer.
Summary of Features Available for Free
SerDesDesign.com SerDes System Tool provides free detailed SerDes system behavioral
modeling for all the blocks shown in the above figure. The behavioral modeling includes the
following:
• Tx models:
o FFE defined with taps, with tap codes, with digital registers, and as a
black box.
o CTLE defined with peaking characteristics, poles/zeros, time domain
waveforms, and frequency domain spectrums.
o Supports de-embedding Tx IBIS characteristic from the Tx data to
obtain the Tx AMI model.
o Supports corner cases Typical, Slow and Fast.
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