| 摘要 |
A microcomputer incorporates a pair of DMA controllers that are co-dependently operated to read and write common data blocks to two peripheral devices. In an exemplary embodiment of the invention, one of the DMA controllers is designated to read a data block from memory, store the data, and then write the data in a single write cycle to each of the two peripheral devices. This DMA controller provides the address and control signals necessary for writing the data to a first of the two peripheral devices, while the other DMA controller provides the address and control signals necessary for writing the data block to a second of the two peripheral devices. As a result, only one read and one write command are required for the data to be written to the two peripheral devices.
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