ADAU1761BCPZ-R7 datasheet(70/92 Pages) AD

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Data Sheet

ADAU1761

CONTROL REGISTERS

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Rev. F | 70 of 92

Table 97. Playback Line Output Left Volume Control Register (Continued)

Bits

Bit Name

Description

1 = headphone output.

R32: Playback Line Output Right Volume Control, 16,422 (0x4026)

Table 98.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ROUTVOL[5:0]

ROUTM

ROMODE

Table 99. Playback Line Output Right Volume Control Register

Bits

Bit Name

Description

[7:2]

ROUTVOL[5:0]

Line output volume control for right channel, ROUTN and ROUTP outputs. Each 1-bit step corresponds to a 1 dB increase in volume. See

Table 152 for a complete list of the volume settings.

Setting

Volume

000000

−57 dB (default)

…

111001

0 dB

…

111111

6 dB

ROUTM

Line output mute for right channel, ROUTN and ROUTP outputs (active low).

0 = mute.

1 = unmute (default).

ROMODE

Line output mode for right channel, ROUTN and ROUTP outputs. These pins can be configured for either line outputs or headphone

outputs. To drive earpiece speakers, set this bit to 1 (headphone output).

0 = line output (default).

1 = headphone output.

R33: Playback Mono Output Control, 16,423 (0x4027)

Table 100.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

MONOVOL[5:0]

MONOM

MOMODE

Table 101. Playback Mono Output Control Register

Bits

Bit Name

Description

[7:2]

MONOVOL[5:0]

Mono output volume control. Each 1-bit step corresponds to a 1 dB increase in volume. If MX7[1:0] in Register R28 is set for

common-mode output, volume control is disabled. See Table 152 for a complete list of the volume settings.

Setting

Volume

000000

−57 dB (default)

…

111001

0 dB

…

111111

6 dB

MONOM

Mono output mute (active low).

0 = mute.

1 = unmute (default).

MOMODE

Headphone mode enable. If MX7[1:0] in Register R28 is set for common-mode output for a capless headphone configuration, this bit

should be set to 1 (headphone output).

0 = line output (default).

1 = headphone output.

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