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DM648的EMIFA接口无信号输出。



调试中碰到的现象如下:

ACE管脚、AOE管脚、 #ASDWE管脚无信号输出。

其中:

AECLKOUT管脚输出正常,为SYSCLK4/8。

CE2CFG寄存器=0x621510a9;

BPRIO寄存器=0x00000000;

PINMUX寄存器=0x28000;

MDCTL[25]=0x103;

EMIFA接口与FPGA连接,每秒对0xa0000000写0x12345678值来触发EMIFA写时序。