Data driven information processor capable of internally processing data in a constant frequency irrespective of an input frequency of a data packet from the outside

Abstract

A packet generation unit divides a plurality of generated clocks to generate clocks with different frequencies, selects any of the frequencies, sets destination information and data depending on a selected clock rate and generates a data packet that stores the setting result. An input/output control unit taken the data packet generated by the packet generation unit and sends it to a program storage unit or a data memory interface unit according to the destination information. As a result, information can be internally processed in a predetermined frequency without depending on an outside clock. When the outside clock is slow, information can be internally processed in a higher-rate frequency. On the contrary, when the outside clock is too fast to internally process information, information can be internally processed in a lower-rate frequency to secure a processing time.