Delay locked loop and delay locking method having burst tracking scheme

摘要

A Delay Locked Loop (DLL) includes a replica delay unit configured to delay an output clock to generate a feedback clock; a phase detector configured to measure a phase difference between the feedback clock and an input clock; a quantization unit configured to quantize the phase difference measured by the phase detector; and a delay unit configured to delay the input clock based on a quantization result from the quantization unit to generate the output clock.