PHASE CONTROLLER AND METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a phase controller capable of matching clock phases between plural blocks in a short time by combining a counter method and a binary search method. SOLUTION: This phase controller is provided with a comparison means 100 for comparing a first clock and a second clock and outputting comparison signals, a counter means 200 for adjusting the delay of an output clock with first delay time as a unit by the comparison signals 100, outputting operation signals at the time of exceeding the adjustable time of the delay and outputting the output clock when the phases are matched within the adjustable time of the delay and a binary search means 300 for adjusting the delay of the output clock by second delay time longer than the first delay time by using binary search by the comparison signals 100 and performing output to the counter means when the operation signals are inputted.