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C5515的CLKOUT引脚是否能在应用中输出时钟信号?



我想通过C5515的CLKOUT引脚输出系统时钟,给外部Codec作为MCLK输入,已经设置好了相关寄存器。

用XDS100V3连接目标板调试程序时,能够输出SYSCLK到CLKOUT引脚,但是将.bin文件下载到板子上后,无法正常输出了。

请问这是什么原因,CLKOUT引脚只能用于调试?