| 摘要 |
PROBLEM TO BE SOLVED: To reduce the power consumption of a function block to receive a communication packet. SOLUTION: A communication packet S40a transmitted from a function block 40 is inputted to an address identification circuit 51b via a bus interface 51a of a function block 50 and whether or not the communication packet is addressed to its own block is discriminated. In the case that the communication packet S40a is addressed to its own block, transmission data in the communication packet S40a are written in a frame buffer 51c. A CPU 52 reads the transmission data written in the frame buffer 51c. Similarly the communication packet S40a is discriminated through an address identification circuit 61b of the function block 60 as to whether or not the communication packet S40a is addressed to its own block. In the case that the communication packet S40a is not addressed to its own block, a stop signal S61b is outputted to a reception control circuit 61d to stop supply of an operating cock so as to suppress the power consumption of a frame reception circuit 61. |
