CS43L21 datasheet(42/63 Pages) CIRRUS

42 / 63 page

DS723A1

CS43L21

Function:

These bits select the gain multiplier for the headphone/line outputs. See “Line Output Voltage Characteris-

tics” on page 14 and “Headphone Output Power Characteristics” on page 15.

DAC Single Volume Control (DAC_SNGVOL)

Default: 0

Function:

The individual channel volume levels are independently controlled by their respective Volume Control reg-

isters when this function is disabled. When enabled, the volume on all channels is determined by the AOU-

TA Volume Control register and the AOUTB Volume Control register is ignored.

PCMX Invert Signal Polarity (INV_PCMX)

Default: 0

0 - Disabled

1 - Enabled

Function:

When enabled, this bit will invert the signal polarity of the PCM x channel.

DACX Channel Mute (DACX_MUTE)

Default: 0

0 - Disabled

1 - Enabled

Function:

The output of channel x DAC will mute when enabled. The muting function is affected by the DACx Soft and

Zero Cross bits (DACx_SZC[1:0]).

6.6

DAC Control (Address 09h)

DAC Data Selection (DATA_SEL[1:0])

Default: 00

00 - PCM Serial Port to DAC

01 - Signal Processing Engine to DAC

10 - Reserved

11 - Reserved

Function:

Selects the digital signal source for the DAC. Note: Certain functions are only available when the “Signal

Processing Engine to DAC” option is selected using these bits.

543

DATA_SEL1

DATA_SEL0

FREEZE

Reserved

DEEMPH

AMUTE

DAC_SZC1

DAC_SZC0

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