Adaptive XTCR, AGC, and Adaptive DFE Loop

Taehyoun Oh, Ramesh Harjani

Research output: Chapter in Book/Report/Conference proceedingChapter


The hardware performance of an ISI equalizer and XTC is dependent on the adaptive calibration algorithm used for the XTC combined with the AGC and the DFE. In this paper we describe an automatic calibration algorithm that focuses on high-speed crosstalk cancellation and crosstalk reutilization techniques for single-end I/Os [1]. The crosstalk signal between channels in multiple lanes strongly depends on the channel spacing of the PCB lanes and proximity issues caused by pads and bond wires. Recently developed low-power crosstalk cancellation and crosstalk reutilization schemes are able to achieve high signal integrity even in severe crosstalk environments, where previously, the data eye openings might have been completely closed [1]. The power-efficient adaptive techniques described here are intended for use with the hardware circuits and techniques described in a previous study [1].

Original languageEnglish (US)
Title of host publicationAnalog Circuits and Signal Processing
Number of pages21
StatePublished - 2014

Publication series

NameAnalog Circuits and Signal Processing
ISSN (Print)1872-082X
ISSN (Electronic)2197-1854

Bibliographical note

Funding Information:
Acknowledgments The present research was supported in part by the Semiconductor Research Corporation under grant #2008-HC-1836-090768 at the University of Minnesota and has been partially conducted under a Research Grant from Kwangwoon University in 2013.

Publisher Copyright:
© 2014, Springer Science+Business Media New York.


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