Patent ID: 8228976
Filing Date: 2012-07-24
Classification: H04L

Abstract:
1. A dual-port input equalizer, comprising: a control unit, for generating a first control signal and a second control signal according to a selection signal; a first input signal processing unit, coupled to the control unit, for receiving a first differential current and outputting a first differential voltage according to the first control signal and the second control signal; a second input signal processing unit, coupled to the control unit, for receiving a second differential current and outputting a second differential voltage according to the first control signal and the second control signal; a third input signal processing unit, coupled to the control unit, for receiving a third differential current and outputting a third differential voltage according to the first control signal and the second control signal; a fourth input signal processing unit, coupled to the control unit, for receiving a fourth differential current and outputting a fourth differential voltage according to the first control signal and the second control signal; a first equalizer, coupled to the first input signal processing unit and the second input signal processing unit, for receiving the first differential voltage and the second differential voltage according to the first control signal and the second control signal, the first equalizer comprising: a second equalizer, coupled to the third input signal processing unit and the fourth input signal processing unit, for receiving the third differential voltage and the fourth differential voltage according to the first control signal and the second control signal, the second equalizer comprising: wherein the first equalizer receives the first differential voltage and the second differential voltage when the selection signal is at a first level, and the second equalizer receives the third differential voltage and the fourth differential voltage when the selection signal is at a second level.