DATA PROCESSING METHOD THROUGH BUS

摘要

PROBLEM TO BE SOLVED: To provide a data processing method through bus. SOLUTION: This method for processing data through a bus connected to a plurality of devices is composed of (A) a step for receiving a request including the identification information of a destination device for requesting access from a source device to the bus during the cycle of a bus clock, (B) a step for transmitting a first control signal for instructing the source device to input data in response to the request at the input point of a buffer connected between the source device and the bus in response to the request and (C) a step for transmitting a second control signal for prompting the buffer to output the data onto the bus in a bus clock cycle after the transmission of the first control signal. The second control signal is transmitted in the bus clock cycle preceding the tip edge of a clock corresponding to the intended destination device by one cycle of the bus clock or less, and the data occupy the bus only during one bus clock cycle.