Everest Semiconductor

ES7322

10 – Deemphasis filter for Fs=44.1 KHz

11 – Deemphasis filter for Fs=48 KHz

Reserved

0

Reserved

8.9 DAC Mute Control – 0x08

Bit Name

Bit

Description

DACMute

7

0 – unmute analog outputs for both channels (default)

1 – mute analog outputs for both channels

DACRampRate

6

These bits define volume control ramp rate:

00 – 0.5 dB per 4 LRCK (default)

01 – 0.5 dB per 8 LRCK

10 – 0.5 dB per 16 LRCK

11 – 0.5 dB per 32 LRCK

AutoMute

5

Auto mute function: long period of zero inputs (8k audio samples)

will mute the analog output. Any single non-zero input will un-mute.

0 – disable

1 – enable (default)

DACL=R

4

0 – normal (default)

1 – both channel volume control is set by Left Volume Control

register

DACSoftRamp

3

Soft ramp at mute and volume change:

0 – Disabled

1 – Enabled (default)

DACZeroCrs

1

Mute or volume change at zero crossing signal level to minimize

audible noise

0 – Disabled

1 – Enabled (default)

Reserved

0

Reserved

8.10 DAC Left Volume Control – 0x09

Bit Name

Bit

Description

DACVolumeL 7:0 Digital volume control setting attenuates the signal in 0.5 dB incremental

from 0 to –120 dB. Max setting is –120 dB.

0000 0000 – no attenuation (default)

0000 0001 – 0.5 dB attenuation

0000 0010 – 1.0 dB attenuation

0000 0011 – 1.5 dB attenuation

……..

8.11 DAC Right Volume Control – 0x0a

Bit Name

Bit

Description

DACVolumeR 7:0 Same as DACVolumeL settings for DAC right channel

Rev 3.0

April, 2006

13