CLOCK FREQUENCY SWITCHING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a clock frequency switching circuit capable of simplifying circuit wiring. SOLUTION: Each of cells 1 to 3 divides the frequency of a clock inputted based on each of feedback signals F1 to F3 outputted from gate logic 12 into two parts or passes the clock as it is. A switching timing generation counter 6 counts up clocks supplied from the cell 3. The gate logic 12 generates the feedback signals F1 to F3 based on the count value of the counter 6 and supplies these signals F1 to F3 to respective cells 1 to 3.