| 摘要 |
<p>PURPOSE: To reduce the mean power consumption of a circuit without deteriorating the operating speed of a necessary circuit. CONSTITUTION: At least two circuit elements 106 and 112 are mutually connected through a bus 136, and the transmission of information can be attained between the circuit elements. A clock signal generator 148 alternately generates clock signals having at least two frequencies, that is, a low frequency and a high frequency. When the information is not transmitted through the bus, the clock signal generator 148 generates the clock signal with the low frequency, and the circuits are operated in a low frequency level. When the information is generated through the bus, the clock signal generator 148 generates the clock signal with the high frequency, and the circuits are operated with the high frequency.</p> |
