| 摘要 |
A computer system includes a clock generator, a system chipset, a controller and a multiplexing unit. The clock generator generates a reference clock according to a plurality of setting values in a frequency setting table. The system chipset generates a piece of first clock control information and a first clock. The controller is used to switch the level of the control signal and generates a piece of second clock control information and a second clock. The multiplexing unit is used to receive the control signal to select either the first clock control information or the second clock control information to be a piece of main clock control information and select either the first clock or the second clock to be a main clock. The clock generator adjusts the setting values according to the main clock control information and the main clock to change the frequency of the reference clock.
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