DSP FOR INPUT SIGNAL AT MULTIPLE CIRCUITS

摘要

PURPOSE: A DSP(Digital Signal Processor) is provided to selectively process input signals at multiple circuits where plural circuits are connected in parallel. CONSTITUTION: The device comprises an input circuit(31), a priority determination device(32), an input signal selector(33) and a microprocessor(34). The input circuit(31) converts analog signals into digital signals, and outputs each microprocessor input signal. The priority determination device(32) performs a logical calculation on the input signal, determines a priority for each signal to be inputted into the microprocessor(34), and outputs a selection signal. The input signal selector(33) receives the input signal via data pins, and selectively the input signal according to the selection signal. The microprocessor(34) processes the output signal of the input signal selector(33) via an external interrupt port.