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TMS320F28379D: Have a doubt in 1.65V reference in 3phase 3Level grid connected inverter (TIDA - 01606)

Part Number: TMS320F28379D


I want to design 3 phase grid tied inverter. I have seen this (TIDA - 01606) reference design.

1.65V is connected in 17th pin. 17th pin going to ADCINA3.

I had a look in the firmware (F28739D). In that I can't able to find the ADCINA3 result registers.

I think ADCINA3 is not used in the firmware. Please clear my doubt 1.65V is needed or not.

If needed for purpose it is used Please clear.