ADAU1461WBCPZ-R7 datasheet(70/89 Pages) AD

70 / 89 page

ADAU1461

Rev. 0 | Page 69 of 88

R29: Playback Headphone Left Volume Control, 16,419 (0x4023)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

LHPVOL[5:0]

LHPM

HPEN

Table 61. Playback Headphone Left Volume Control Register

Bits

Bit Name

Description

[7:2]

LHPVOL[5:0]

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

See Table 93 for a complete list of the volume settings.

Setting

Volume

000000

−57 dB (default)

…

111001

0 dB

…

111111

6 dB

LHPM

Headphone mute for left channel, LHP output (active low).

0 = mute.

1 = unmute (default).

HPEN

Headphone volume control enable. Logical OR with the HPMODE bit in Register R30. If either the HPEN bit or

the HPMODE bit is set to 1, the headphone output is enabled.

0 = disabled (default).

1 = enabled.

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 62. Playback Headphone Right 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 93 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.

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