BIT PHASE DETECTION CIRCUIT AND BIT PHASE SYNCHRONIZATION CIRCUIT

摘要

PURPOSE: To detect instantaneously whether or not an edge of a clock signal is located in the vicinity of a change point of a received data signal. CONSTITUTION: An EXOR circuit 6 compares a level of a signal DF2 obtained by receiving a received data signal D0 at a DFF circuit 4 with a clock signal CK and a level of signal DF1 obtained by receiving the delayed signal D0 delayed by a delay circuit 3 at a DFF circuit 5 with the clock signal CK. The propriety of the phase relation between the data signal and the clock signal is detected based on the result of the comparison.