| 摘要 |
PROBLEM TO BE SOLVED: To realize multi-dimensional addressing by connecting a plurality of DMA controllers, each having high reusability, simple specifications and small circuit scale. SOLUTION: In this data transfer method of a data transfer system including a first DMA controller for supporting multi-dimensional addressing, a second DMA controller exclusive for memory write and a third DMA controller exclusive for memory read, the third DMA controller reads information showing an address to start data transfer and the length of transfer from a predetermined memory, and transfers it to the second DMA controller, and the second DMA controller writes information transferred from the third DMA controller in the first DMA controller, and executes the data transfer based on the information written by the first DMA controller. Then, the predetermined memory is made to store a plurality of information showing the address to start the data transfer and the length of transfer, and the data transfer for any discontinuous memory region is made possible. COPYRIGHT: (C)2006,JPO&NCIPI
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