Hello, Yes, that's the correct way to configure EXTSYNCIN1. An external sync signal (EXTSYNCIN1 or EXTSYNCIN2) can be used to issue a sync signal to the first ePWM module in each chain and since EPMW1 is first in chain it will directly be applied to it. You could refer to Figure 15-7 in TRM (15.4.3.3 Time-Base Counter Synchronization) which clearly shows the diagram and where EXTSYNCIN1 is applied.
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