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TAS5717: The output voice of headphones is too low in TAS5717

Part Number: TAS5717

We draw the circuit diagram according to the reference design of TAS5717EVM, but we found that the voice of speaker is normal, and the voice of headphones is very low.

The headphones is I2S input and we set 0x05 register is 0x13 when inserting headphones and 0x00 when unplugging.

We try to adjust 0x07/08/09/0C and the voice of headphones will have some change,but the voice of headphones is still low after we adjust 0x07/08/09/0C to maximum.

So How to resolve it ? Thank you very much!