Specifications

Mixer Chip Programming 4-17
Registers 0x3F/0x40 (Input Gain .L/.R)
Registers 0x41/0x42 (Output Gain .L/.R)
2 bits per channel, giving 4 levels.
0 to 3 ⇒ 0 dB to 18 dB, in 6 dB steps.
Default is 0 ⇒ 0 dB.
Register 0x43:0 (Mic AGC)
0 ⇒ AGC on (default).
1 ⇒ Fixed gain of 20 dB.
Registers 0x44/0x45 (Treble .L/.R)
Registers 0x46/0x47 (Bass .L/.R)
4 bits per channel, giving 16 levels.
0 to 7 ⇒ – 14 dB to 0 dB, in 2 dB steps.
8 to 15 ⇒ 0 dB to 14 dB, in 2 dB steps.
Default is 8 ⇒ 0 dB.