Direct memory access(DMA)is an important technology used for fast speed data transfer in data signal processor(DSP). DMA is able to move data block independent of CPU, and this capability meets real time image processing.

• 直接内存存取(DMA)是数字信号处理器(DSP)中用于快速数据交换的重要技术,它具有独立于CPU的后台批量数据传输能力,能够满足实时图像处理中高速数据传输要求。