Continuous time linear equalization for current-mode logic with transformer
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United States of America Patent
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Dec 26, 2017
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app pub date -
Nov 22, 2016
filing date -
Apr 6, 2015
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Abstract
The present invention is directed to data communication systems and methods. More specifically, embodiments of the present invention provide a CML that uses one or more equalization modules to apply equalization via secondary windings of transformers that are coupled, directly or indirectly, to the CML outputs. The equalization modules comprises a DAC component that generates switching signals based on control signals received from an external equalization module. The equalization module also includes switchable resistors and/or capacitors. The switching signals are used to select switchable resistors and/or capacitors. By switching resistors and/or capacitors at the equalization module, the outputs of the CML are equalized. There are other embodiments as well.
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