PROCESSOR INPUT AND OUTPUT SYSTEM

摘要

PURPOSE:To indicate the input/output of data with a hard constitution by using the input and output timing controls and an output period timing means to control the input or output timing of data to a processor. CONSTITUTION:An input cycle counter 1 decides a period of time during which data are supplied after detecting a synchronizing clock. Then a period of time during which data are delivered after the synchronizing clock is detected is decided by an output cycle counter 5. Furthermore an output period counter 6 decides a period during which the data delivered from a processor is delivered onto an external data bus B.