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tms320c6701的EMIF和sdram通讯,无法进行谢数据



6701的EMIF口没有和SDRAM进行硬件连接,我通过对全局控制寄存器、CE0、以及SDRAM控制和时钟寄存器进行设置,想通过一个对sdram口的写操作(*(int *)0x00400000 =0x01),看emif口是否可用。程序每次运行到写操作语句时,就报错不能运行。而将程序(已修改存储空间分配)放入6713中,写操作可正确运行。这是什么原因?(开发软件ccs3.3)