| 摘要 |
<p>A plurality of control units is configured to control a executing unit to execute each function in one of a plurality of performance modes. Each control unit is configured to be capable of switching an operational state thereof between a running state and a halt state. A plurality of combinations of the operation states for the control units are different from one performance mode to another. At least one control unit of the plurality of control units is in the running state in each performance mode. The plurality of performance modes have different performance levels. A selecting unit selects one of the plurality of performance modes based on the function corresponding to the at least one instruction. The plurality of control units controls the executing unit to execute the function corresponding to the at least one instruction in the one of the plurality of performance modes.</p> |
