| 摘要 |
PROBLEM TO BE SOLVED: To carry out stable fast operation by verifying the timing margin of an actual electric circuit and setting optimum timing conditions according to the result when the system is started. SOLUTION: An electric timing optimizing circuit 1 supplies a clock CLKa to a circuit A 2 and a clock CLKb to a circuit B 3. An optimum condition decision circuit 101 sets all timing conditions that a circuit block possibly has in a timing condition setting circuit 102 one by one, verifies whether or not the circuit block operates normally under the set timing conditions, and sets a center timing condition among timing conditions wherein the circuit block does not operate normally in respective circuit blocks. The timing condition setting circuit 102 generates a signal for controlling a timing generating circuit 103, which adjusts the skew between circuit blocks. |
