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DMA部分设置在你另一个贴子(这是不用FIFO时)：
http://www.deyisupport.com/question_answer/dsp_arm/c6000_dsp/f/32/p/104287/278246.aspx#278246
McASP只要将相应管脚配置成相应功能，相应通道使能就行了。
