ADAU1761BCPZ-R7 datasheet(74/93 Pages) AD

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ADAU1761

Data Sheet

Rev. D | Page 74 of 93

R30: Playback Headphone Right Volume Control, 16,420 (0x4024)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RHPVOL[5:0]

RHPM

HPMODE

Table 64. Playback Headphone Right Volume Control Register

R31: Playback Line Output Left Volume Control, 16,421 (0x4025)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

LOUTVOL[5:0]

LOUTM

LOMODE

Table 65. Playback Line Output Left Volume Control Register

Bits

Bit Name

Description

[7:2]

RHPVOL[5:0]

Headphone volume control for right channel, RHP output. Each 1-bit step corresponds to a 1 dB increase in

volume. See Table 95 for a complete list of the volume settings.

Setting

Volume

000000

−57 dB (default)

…

111001

0 dB

…

111111

6 dB

RHPM

Headphone mute for right channel, RHP output (active low).

0 = mute.

1 = unmute (default).

HPMODE

RHP and LHP output mode. These pins can be configured for either line outputs or headphone outputs. Logical

OR with the HPEN bit in Register R29. If either the HPMODE bit or the HPEN bit is set to 1, the headphone output

is enabled.

0 = enable line output (default).

1 = enable headphone output.

Bits

Bit Name

Description

[7:2]

LOUTVOL[5:0]

Line output volume control for left channel, LOUTN and LOUTP outputs. Each 1-bit step corresponds to a 1 dB

increase in volume. See Table 95 for a complete list of the volume settings.

Setting

Volume

000000

−57 dB (default)

…

111001

0 dB

…

111111

6 dB

LOUTM

Line output mute for left channel, LOUTN and LOUTP outputs (active low).

0 = mute.

1 = unmute (default).

LOMODE

Line output mode for left channel, LOUTN and LOUTP 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.

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