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TLV320AIC3106: Help with configuration

Part Number: TLV320AIC3106


Hi,

We have a design with the TI3106 codec attached to Silvertel AG2120 module.  One channel.  Input is attached to the LINE1LP for input and LEFT_LOP for output from the codec.

For a simple proof of concept we used the register settings below.  [<register>,<value>]

[...clocking setup...]

[0x07, 0x08]

[0x25, 0xC0]

[0x29, 0x40]

[0x2B, 0x20]

[0x1A, 0x00]

[0x0F, 0x00]

[0x13, 0x44]

[0x0C, 0x00]

[0x56, 0x0A]

Tones work fine however voice can not be heard.

Does anyone have suggestions on what settings to try and improve this situation?  

Is there an example configuration for the use of LINE1LP and LEFT_LOP?  I could not find one.

Finally there are multiple gain controls (pga, interfaces, etc).  I've wondered if there is an order of preference as to which should be considered first?

Regards,

Mark