Data receiver circuit and method of adaptively controlling equalization coefficients using the same

Abstract

Provided are a data receiver circuit and a method of adaptively controlling an equalization coefficient using the same. The data receiver circuit includes n sampling receivers, n decision feedback equalizer (DFE) circuits, and a data recovery circuit. The n sampling receivers are configured to sample an input signal and output n respective sampling signals in response to n respective clock signals. The n DFE circuits are configured to equalize the n respective sampling signals in response to a DFE control signal and generate n respective pre-recovery signals in response to the n equalized sampling signals and n respective previous pre-recovery signals, the DFE control signal for changing an equalization ability of the n DFE circuits. The data recovery circuit is configured to select one of the n respective pre-recovery signals, and output the selected n pre-recovery signal as a recovered input signal.