| 摘要 |
Provided is a clock supply device that variably adjusts a frequency of a clock supplied to each module, as needed. The clock supply device includes a clock output unit that switches between clocks having different frequencies and output the clocks; a clock distribution unit that distributes and supplies the clocks from the clock output unit to the plurality of modules; and a clock switching control unit that causes the frequencies of the clocks from the clock output unit to be switched. The clock switching control unit includes a clock request pattern determination unit. The clock request pattern determination unit outputs a control signal for decreasing a clock frequency to a slow frequency, to the clock output unit, when a pattern of a clock request signal output from a monitoring target module satisfies a predetermined condition pattern.
|
