SKEW CALIBRATION CIRCUIT AND OPERATION METHOD OF THE SKEW CALIBRATION CIRCUIT

摘要

A skew calibration circuit may include a data delay unit receiving first data and a first code, and output delayed first data as second data by delaying the first data according to the first code; a clock delay unit receiving a first clock signal and a second code, and output delayed first clock signal as second clock signal by delaying the first clock signal according to the second code; a multiplexer receiving a clock signal and output the clock signal or an inverted clock signal of the clock signal as a first clock signal in response to a selection signal; and a control logic unit receiving the second data and the second clock signal and control the first code, the second code and the selection signal in response to the second data and the second clock signal.

主权项

1. A skew calibration circuit comprising:
a data delay unit configured to receive first data and a first code, and to output second data by delaying the first data based on the first code; a clock delay unit configured to receive a first clock signal and a second code, and to output a second clock signal by delaying the first clock signal based on the second code; a multiplexer configured to output, as the first clock signal, one of a received clock signal or an inverted version of the received clock signal based on a selection signal; and a control logic unit configured to receive the second data and the second clock signal, and to generate the first code, the second code and the selection signal based on the second data and the second clock signal.