| 摘要 |
<p>PURPOSE:To process the CPU cycle of the microprocessor and the system cycle of each system device at the same phase. CONSTITUTION:When an internal system clock signal (output clock 1C) at a prescribed frequency is generated by frequency-dividing a first inputted clock at a frequency dividing means (frequency divider circuit 1B), a clock output means 1D outputs this internal system clock signal to the outside as a second clock signal (system clock 1E) and further, this second clock signal is inputted to an external device, fed back and inputted through a clock input means as the internal system clock signal of a CPU 1G.</p> |
