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LAUNCHXL-F28379D: 为何GPIO0会产生50MHz的正弦波

Part Number: LAUNCHXL-F28379D

你好!

主程序如下:

我将EPWM1A设置为2kHz,占空比为50%的方波,在CLB中将overriding outputs 设置为output0来控制EPWM1A,并将FSM_0进行如下设置:

OUTLUT_0设置如下:

而后用示波器查看GPIO0的波形:

请问ti工程师为何GPIO0会产生50MHz的正弦波吗?