CS42324 datasheet(53/71 Pages) CIRRUS

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DS721A6

CS42324

6.9.3

Analog Input Selection

These bits are used to select the input source for the ADC.

6.10

DAC1 Control (Address 0Bh)

6.10.1

DAC1 De-Emphasis Control

This bit enables the digital filter to apply the standard 15μs/50μs digital de-emphasis filter response for a

sample rate (Fs) of 44.1 kHz. De-emphasis is available only in Single-Speed Mode.

6.10.2

DAC1 Single Volume Control

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 DAC1 channels is determined by the

DAC1A Volume Control register and the DAC1B Volume Control register is ignored.

6.10.3

DAC1 Soft Ramp Control

Soft Ramp allows level changes, both muting and attenuation, to be implemented by incrementally ramp-

ing, in 1/8 dB steps, from the current level to the new level at a rate of 1 dB per 8 left/right clock periods.

ADC_SOFT

ADC Soft Ramp Control

Off

1On

AIN_SEL[2:0]

ADC Soft Ramp Control

000

Reserved

001

Line-Level Input Pair 1

010

Line-Level Input Pair 2

011

Line-Level Input Pair 3

100

Line-Level Input Pair 4

101

Line-Level Input Pair 5

110

Reserved

111

Reserved

432

DAC1_DEPH

DAC1_SNGV

DAC1_SOFT

DAC1_ZC

DAC1_

LOOPBACK

DAC1_INV

DAC1_MIX1

DAC1_MIX0

DAC1_DEPH

DAC1 De-Emphasis Control

Off

On (valid for Fs = 44.1 kHz)

DAC1_SNGVOL

DAC1 Single Volume Control

Off

1On

DAC1_SOFT

DAC1 Soft Ramp Control

0Off

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