How to feed audio signal into the inputs of a TPA3255

Hi, i'm trying to design my own TPA3255 amplifier board, after seeing that most ones online are bad / terrible. One of those failed in front of my eyes for no apparent reason, while playing music well below the maximum power level of the IC (300W RMS x 2).

But i ran into a problem: i cannot understand how to feed the audio signal to the inputs of the tpa3255.

In the TPA3255 IC, there are input A, input B, input C and input D, but i dont know how to use them, i was expecting to find two simple inputs and a ground, like in the TPA3116D2.
But this one seems to be different.

Does anyone know how to use those inputs? Thanks in advance.
 
Well, i tried... But i just cannot understand it. I'm just a hobbist, i can understand a lot but not everything.

It does not say a lot regarding the inputs. There is not even a full example schematic, it does not include this part of the circuit that i'm trying to understand...

Actually, this is the only part i wasn't able to understand.