SERIALIZER/DESERIALIZER WITH INDEPENDENT EQUALIZATION ADAPTATION FOR REDUCING EVEN/ODD EYE DISPARITY

摘要

A method for reducing a disparity between even and odd eye characteristics in recovered data includes: receiving an input serial data stream; performing independent data slicing of even and odd components in the serial data stream to generate corresponding even and odd discrete-time data samples, respectively; performing independent error slicing of even and odd components in the serial data stream to generate corresponding even and odd discrete-time error samples, respectively; deserializing the even and odd discrete-time data and error samples to generate the recovered data and recovered error, respectively; and controlling respective offsets for error slicing of the even and odd components independently so as to reduce the disparity between even and odd eye characteristics in the recovered data.

主权项

1. A method for reducing a disparity between even and odd eye characteristics in recovered data, the method comprising:
receiving an input serial data stream; performing independent data slicing of even and odd components in the serial data stream to generate corresponding even and odd discrete-time data samples, respectively; performing independent error slicing of even and odd components in the serial data stream to generate corresponding even and odd discrete-time error samples, respectively; deserializing the even and odd discrete-time data and error samples to generate the recovered data and recovered error, respectively; controlling respective offsets for error slicing of the even and odd components independently so as to reduce the disparity between even and odd eye characteristics in the recovered data; amplifying the received input serial data stream to generate an amplified serial data stream, a gain of the amplified serial data stream being controlled as a function of a first control signal; generating from the recovered data and error, even and odd equalization adaptation coefficients corresponding to the even and odd discrete-time data and error samples, respectively; and generating the first control signal for controlling the gain of the amplified serial data stream as a function of at least one of an average of the even and odd equalization adaptation coefficients, a greater of the even and odd equalization adaptation coefficients, and a lesser of the even and odd equalization adaptation coefficients.