PURPOSE: To obtain various control functions by installing the signal allotment circuit within the digital device to secure an optional allotment for the input/output end about the control signal to which control function is relating.
CONSTITUTION: Control function modules C1WCn incorporating digital device 2000 are controlled by internal control signals Y1WYn to deliver output U1WUn. Processor 500 provided at the outside is connected to signal allotment circuits 10 and 20 via data bus DB and address bus AB, and processor 500 gives the control so that the data of bus DB may be written into the address designated by bus AB. Within circuits 10 and 20, the assignment register is provided to memorize the data of bus DB along with the decoder which decodes the contents of bus AB and delivers the writing signal to make the assignment register corresponding to the contents write the data of bus DB.
HAMADA NAKAHARU
MURATA FUMIYA
