| 摘要 |
A circuit designing method for a semiconductor integrated circuit, the circuit having a clock control circuit and leaves to which clock signals are propagated through the clock control circuit, has detecting a clock signal producing point where a clock signal is to be produced and an operational mode setting point where an operational mode setting signal for setting an operational mode is to be imparted, using a netlist and a cell library, setting a clock signal and a name of the clock signal at the clock signal producing point, setting an operational mode setting signal suitable for a desired operational mode at the operational mode setting point, propagating the clock signal and the operational mode setting signal, and extracting signals being propagated to the leaves.
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