Importance

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Abstract

A digital signal processing device includes: a processing unit which performs basic operations, the processing unit transmitting an instruction signal including an instruction described by an instruction code when a special-function operation is performed; a plurality of functional blocks, each connected to the processing unit, which perform special-function operations in accordance with the instruction signal; a bus which interconnects the processing unit and the respective functional blocks to transmit a data signal and the instruction signal; and a block selecting unit, responsive to a status signal, which transmits an enable signal to at least one of the functional blocks to select the above-mentioned at least one of the functional blocks, so that the selected functional block is enabled to receive the instruction signal via the bus and to perform at least one of the special-function operations in accordance with the instruction signal, thereby generating processed data which is transmitted back to the processing unit.

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First Claim