Pre and post-acquisition tap quantization adjustment in decision feedback equalizer
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United States of America Patent
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Oct 21, 2014
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app pub date -
Aug 27, 2013
filing date -
Jul 30, 2013
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Abstract
A tap coefficient control circuit and a method for controlling a tap coefficient for a decision feedback equalizer are disclosed. The method includes adjusting a correction voltage applied to the tap coefficient based on a first tap quantization and detecting a decision feedback equalizer tap convergence. After the decision feedback equalizer tap convergence is detected, the method adjusts the correction voltage applied to the tap coefficient based on a second tap quantization, wherein the second tap quantization is different from the first tap quantization.
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