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请问怎样理解ePWM模块的同步信号，有什么作用吗？
Eric:
C2000内部有多个PWM模块，如果没有同步信号，那么几个PWM模块之间的计数就容易不一致。同步信号一来的时候，可以让每个PWM模块都开始重新计数，或是将一些初始计数值加在进去，开始计数，实现相位差。
