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CCS/TMS320F28035: ePWM DC Event Trip Comparator example in C2000ware

Iv Y
Intellectual 390 points
Part Number: TMS320F28035
Other Parts Discussed in Thread: C2000WARE

Tool/software: Code Composer Studio

Hi TI experts,

My question is about the example provided by C2000ware in the following directory.

C:\ti\c2000\C2000Ware_1_00_06_00\device_support\f2803x\examples\c28\epwm_dcevent_trip_comp

I understand the most part of the code except the following issue.

According to the explanation in the file named "Example_2803xEPwmDCEventTripComp.c", the COMP1A signal is from ADCA2, while the COMP1B is from ADCB2. However, after reading through the code, I did not find where it was set. The manual of comparator and ePWM also does not mention how to set the origin of the signal for comparison. Could you please advise if I can choose any ADC input for comparison, or it is fixed by TI? Where can I find the corresponding explanation?

Thanks,