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1、在for循环语句中对6747EMIFA接口进行操作，发现单步调试时，CS或OE信号有时会被不相关语句触发，比如printf（）函数，或者for循环体内部自加也会触发。并且会触发两次OE信号。OE信号有效宽度与设置一样。这是怎么回事啊。
有可能是前面有读写EMIF的操作被推后了，或者其他EDMA有读写EMIF，或者有其他模块再用EMIF
