control unit
The control unit DSPC174 is the command and control center of the entire CPU. It consists of the instruction register IR (Instruction Register), instruction decoder ID (Instruction Decoder) and operation controller OC (Operation Controller), which are extremely important for coordinating the orderly work of the entire computer. According to the user’s pre-programmed program, it takes out each instruction from the memory in turn, puts it in the instruction register IR, and determines what operation should be performed through instruction decoding (analysis), and then operates the controller OC according to the determined timing. Send micro-operation control signals to the corresponding components. DSPC174 operation controller OC mainly includes control logic such as beat pulse generator, control matrix, clock pulse generator, reset circuit and start-stop circuit.

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