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C6678扩展DDR的无法使用EDMA搬运。



6678扩展了DDR到4G,后2G我配置了MPAX映射了256M到逻辑地址0x40000000、0x50000000或者0x60000000,在映射后的逻辑地址和0x80000000之间采用EDMA3搬运数据都不成功,请教大神还需要配置什么呢?