我在看28377的datasheet和controlsuit里面的28377例程时，28377的开发板是用ti的1304作为调制模块接入28377的sdfm模块，他们两个的时钟是由EPWM5模块的PWM输出提供，EPWM11的CPMA作为SDFM模块的FILRES信号。请问时钟信号能由别的端口提供吗（除EPWM端口外），EPWM11的CPMA触发SDFM模块内部的Data Filter Unit单元的重启动，请问这个有什么用呢？是用这个来保证采样和控制的时序吗？谢谢！
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