| 摘要 |
PROBLEM TO BE SOLVED: To more appropriately transfer an asynchronous packet. SOLUTION: An asynchronous transmission DMA(Direct Memory Access) 31 performs DMA transfer of data stored in a RAM(Random Access Memory) connected with a host bus 2 to an asynchronous transmission FIFO(First In, First Out) 32 by unit of packet. When the packet to which the DMA transfer is instructed is stored in a remote memory area of the RAM, the asynchronous transmission DMA 31 starts DMAs to the respective pieces of data to constitute the packet and writes the DMAs to the asynchronous transmission FIFO 32 every piece of data.
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