Semiconductor integrated circuit including delay line of delay locked loop and method of controlling delay time using the same

摘要

A semiconductor integrated circuit includes a delay line of a delay locked loop. The delay line of the delay locked loop includes a delay variation detecting unit that outputs a detection signal according to a variation in delay time using a reference clock signal, and a plurality of delay units that change a delay time according to the detection signal and delay the output of an input signal by the changed delay time.