ADAU1361BCPZ-R7 datasheet(62/81 Pages) AD

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ADAU1361

Rev. C | Page 61 of 80

R21: Right Input Digital Volume, 16,411 (0x401B)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RADVOL[7:0]

Table 48. Right Input Digital Volume Register

Bits

Bit Name

Description

[7:0]

RADVOL[7:0]

Controls the digital volume attenuation for right channel inputs from either the right ADC or the right digital

microphone input. Each bit corresponds to a 0.375 dB step with slewing between settings. See Table 73 for a

complete list of the volume settings.

Setting

Volume Attenuation

00000000

0 dB (default)

00000001

−0.375 dB

00000010

−0.75 dB

…

11111110

−95.25 dB

11111111

−95.625 dB

R22: Playback Mixer Left (Mixer 3) Control 0, 16,412 (0x401C)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reserved

MX3RM

MX3LM

MX3AUXG[3:0]

MX3EN

Table 49. Playback Mixer Left (Mixer 3) Control 0 Register

Bits

Bit Name

Description

MX3RM

Mixer input mute. Mutes the right DAC input to the left channel playback mixer (Mixer 3).

0 = muted (default).

1 = unmuted.

MX3LM

Mixer input mute. Mutes the left DAC input to the left channel playback mixer (Mixer 3).

0 = muted (default).

1 = unmuted.

[4:1]

MX3AUXG[3:0]

Mixer input gain. Controls the left channel auxiliary input gain to the left channel playback mixer (Mixer 3).

Setting

Gain

0000

Mute (default)

0001

−15 dB

0010

−12 dB

0011

−9 dB

0100

−6 dB

0101

−3 dB

0110

0 dB

0111

3 dB

1000

6 dB

MX3EN

Mixer 3 enable.

0 = disabled (default).

1 = enabled.

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