| 摘要 |
PROBLEM TO BE SOLVED: To provide a phase synchronizing device, with which an extracted phase by a data re-timing circuit is automatically optimized when extracting a clock signal from a data input signal and to provide a phase synchronizing method. SOLUTION: This phase synchronizing device is provided with a phase-locked loop circuit 10, that outputs a VCO oscillation signal as a clock signal phase- locked to a data input signal DATA IN, a phase shift circuit 14 that outputs a clock signal with respect to the data input signal DATA IN, a data re-timing circuit 12 that has an identification recovery function outputting a re-timed identification recovery signal as re-timing data, and a phase shift control circuit 16 that uses a data latching circuit 162 to receive an extracted clock signal generated and outputted from the phase locked loop circuit 10 via the phase shift circuit 14 and latches a signal level (logic level), by using the data input signal DATA IN so as to generate phase information. |
