Datasheet

Data Sheet ADAU1772
Rev. B | Page 81 of 116
PGA CONTROL 3 REGISTER
Address: 0x0026, Reset: 0x40, Name: PGA_CONTROL_3
This register controls the PGA connected to AIN3.
Table 67. Bit Descriptions for PGA_CONTROL_3
Bits Bit Name Settings Description Reset Access
7 PGA_EN3 Select line or microphone input. Note that the PGA inverts the signal
going through it.
0x0 RW
0 AIN3 used as a single-ended line input. PGA powered down.
1 AIN3 used as a single-ended microphone input. PGA powered up with
slewing.
6 PGA_MUTE3 Enable PGA3 mute. When PGA is muted, PGA_GAIN3 is ignored. 0x1 RW
0 Unmuted
1 Muted
[5:0] PGA_GAIN3 Set the gain of PGA3. 0x0 RW
000000 −12 dB
000001 −11.25 dB
010000 0 dB
111110 +34.5 dB
111111 +35.25 dB