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TLV320ADC3101: The use of AGC and noise problem.

Part Number: TLV320ADC3101

 when setted AGC  , I couldn't  turn up the volume and turn down the volume.why?

   when I didn’t set AGC, both PGA and Volume can set register to control volume up and down. But the noise is too large.

Register Hex Register Name VALUE
Register 86 0x56 Left AGC Control 1 C0
Register 87 0x57 Left AGC Control 2 5E
Register 88 0x58 Left AGC Max Gain 0A
Register 89 0x59 Left AGC Attack Time 0A
Register 90 0x5A Left AGC Decay Time 0A
Register 91 0x5B Left AGC Noise Debounce 0A

 

How to deal with it? Thanks a lot!

  • Hi, Leo,

    I would recommend to modify the target gain (Register 86) and the maximum AGC gain (Register 88). These registers modify the gain that the AGC can reach. Additionally, could you provide the entire registers configuration, please?

    Thank you.

    Best regards,
    Luis Fernando Rodríguez S.