HYBRID HALF/QUARTER-RATE DECISION FEEDBACK EQUALIZER AND DISPLAY INCLUDING HYBRID HALF/QUARTER-RATE DECISION FEEDBACK EQUALIZER

摘要

A two-stage decision feedback equalizer for receiving serial data, at an analog input, at a first data rate. The two-stage decision feedback equalizer comprises a first stage, comprising a half-rate predictive decision feedback equalizer having: an analog input connected to the analog input of the two-stage decision feedback equalizer, a first digital output, and a second digital output. The two-stage decision feedback equalizer further comprises a second stage, comprising: a first flip flop having a data input connected to the first digital output, a second flip flop having a data input connected to the first digital output, a third flip flop having a data input connected to the second digital output, and a fourth flip flop having a data input connected to the second digital output. The first stage is in a first clock domain configured to operate with a first clock at a frequency equal to one half of the first data rate. The second stage is in a second clock domain configured to operate with a second clock at a frequency equal to one quarter of the first data rate.