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28377D的xclkout管脚和emif管脚同时使用



想用28377D的xclkout管脚输出的时钟给FPGA做主时钟用,用28377D的emif外设与fpga进行数据交换,但是xclkout和emif的D11是同一个管脚

想问一下,怎样才能既能正常使用emif这个外设又能使xclkout输出时钟给FPGA呢?