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TMS320F28069: Problem in ADC

Part Number: TMS320F28069


Sir/Madam,

With reference to the below two threads

1. https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/739367#pi320098=1

2. https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/739367#pi320098=2

My problem is 

1. I am getting values less than 0X0FFF i.e.., less than 4095 . When i am applying 3.3 V at input of ADC. Why??

2. I am having one more query that it is displaying modulation index(Mi) zero in the watch window. But the expected value is near value to one or one. why it is so??

Please help me.

Thanks and Regards,

Surya