Data receiver, data communication system, and data communication method

摘要

A data receiver is disclosed, including an equalization process part, a multi-value oversampling part, and an equalization controller. The equalization process part equalizes serial received data before binarization and outputs the serial received data being equalized. The multi-value oversampling part binarizes the serial received data being equalized by multiple threshold values, conducts oversampling, and generates the multi-value sampling data. The equalization controller detects an eye pattern of the serial received data being equalized based on the multi-value oversampling data, and controls an equalization characteristic of the equalization process part based on a detection result.

主权项

1. A data receiver, comprising:
an equalization process part configured to equalize serial received data before binarization and to output the serial received data being equalized; a multi-value oversampling part configured to binarize the serial received data being equalized by multiple threshold values, to conduct oversampling, and to generate multi-value sampling data; and an equalization controller configured to detect an eye pattern of the serial received data being equalized based on the multi-value oversampling data, and to control an equalization characteristic of the equalization process part based on a detection result, wherein the equalization controller is configured to: detect the eye pattern based on the multi-value sampling data, which are sampled with a same clock, in data acquired by conducting a multi-value oversampling for a set of symbol data; calculate an Exclusive OR for sets of adjacent data of the multi-value sampling data, which are sampled with the same clock, in data in which the set of the symbol data is acquired by the multi-value oversampling; add calculation results of the Exclusive OR corresponding to the sets of the adjacent data for each of phase clocks; and detect the eye pattern based on the addition results.