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据我所知,应该就是把数据放在DMA可访问的L2或者L3地段即可。至于你说的DMA过程中可能出现较多次数的中断、总线仲裁等情况,DMA存放ADCresults时,采用突发传送,没有CPU的参与,DMA收到ADC的中断就把数据直接存放在内存里了,然后内存放满了你想要的数据后,可以给CPU一个中断。不知道你指的是什么?