| 摘要 |
<p>PURPOSE:To operate a system more surely by providing a clock generator with a ready signal generating circuit to give the function which outputs a multiword signal capable of coping with even a DRAM nibble mode. CONSTITUTION:A clock generator 2 incorporates a ready signal generating circuit 21 which generates a ready signal used for a microprocessor. The circuit 21 outputs plural signals for transfer data indicating that effective data is outputted to an external device at the time of read of the processor 3 and that the external device takes in data at the time of write. At this time, a wait control signal is outputted to the generator 2, and the circuit 21 generates a ready signal after inserting a required wait cycle. Thus, the circuit 21 has the function which outputs the multiword signal capable of coping with the DRAM nibble mode, and the system is operated more surely.</p> |
