| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technique for performing high-speed switching between clock signals different in frequency. <P>SOLUTION: This clock control signal generation circuit (101) forms a control signal for clock switching in a clock selector performing the switching between a plurality of clock signals including a first clock signal based on a first clock stop permission signal, a second clock stop permission signal, and a clock resumption permission signal. The clock control signal generation circuit includes a before-switching clock processing part (102) and an after-switching clock processing part (106). In each of the before-switching clock processing part and the after-switching clock processing part, a high-frequency clock processing part and a low-frequency clock processing part take partial charges of processing of the clock signals related to the switching to speed up the processing. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
