WM8962B datasheet(216/295 Pages) WOLFSON

216 / 295 page

WM8962

216

Rev 4.3

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R17 (11h)

ALC1

ALC_INACTIVE

_ENA

Select whether the ALC is in Active Mode (that is, ALC is

controlling the PGA gain) or in Monitor Mode (the analogue

controls are disabled). Note that at least one of ALCL_ENA

and ALCR_ENA must also be enabled

0 = ALC is in Active Mode

1 = ALC is in Monitor Mode

ALC_LVL_MOD

Select the range of the ALC target level.

0 = -28.5dBFS to -6dBFS in 1.5dB steps

1 = -22.5dBFS to -1.5dBFS in 1.5dB steps

ALCL_ENA

Select ALC on the Left channel

0 = Disabled (PGA gain set by INL_VOL)

1 = Enabled

Note that in stereo mode, the left and right PGA volumes,

and left and right boost mixer volumes, must be the same

before setting ALCL_ENA = 1 and ALCR_ENA = 1

ALCR_ENA

Select ALC on the Right channel

0 = Disabled (PGA gain set by INR_VOL)

1 = Enabled

Note that in stereo mode, the left and right PGA volumes,

and left and right boost mixer volumes, must be the same

before setting ALCL_ENA = 1 and ALCR_ENA = 1

6:4

ALC_MAXGAIN

[2:0]

111

Maximum ALC gain

000 = -18dB

001 = -12dB

010 = -6dB

011 = 0dB

100 = +6dB

101 = +12dB

110 = +18dB

111 = +24dB

3:0

ALC_LVL [3:0]

1011

Set the Target signal level at the ADC input.

Note that the target level is also determined by

ALC_LVL_MODE.

ALC_LVL_MODE = 0

0000 = -28.5dBFS

0001 = -27.0dBFS

…in 1.5dB steps to…

1111 = -6dBFS

ALC_LVL_MODE = 1

0000 = -22.5dBFS

0001 = -21.0dBFS

…in 1.5dB steps to…

1110 = -1.5dBFS

1111 = -1.5dBFS

WM8962B Datasheet(PDF) 216 Page - Wolfson Microelectronics plc

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