ANALOG PRODUCTS DIVISION

561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (480) 632-1715

www.protekanalog.com

PA5331

Low Power 24-Bit, Stereo Audio CODEC

With Headphone Amplifier

95250 Rev.0. 01/10

NOT FOR USE IN LIFE SUPPORT SYSTEMS

1

– double speed mode

DACFsRatio

4:0

Master mode DAC MCLK to sampling frequency ratio

00000

— 128;

00001

— 192;

00010

— 256;

00011

— 384;

00100

— 512;

00101

— 576;

00110

— 768; (default)

00111

— 1024;

01000

— 1152;

01001

— 1408;

01010

— 1536;

01011

— 2112;

01100

— 2304;

10000

— 125;

10001

— 136;

10010

— 250;

10011

— 272;

10100

— 375;

10101

— 500;

10110

— 544;

10111

— 750;

11000

— 1000;

11001

— 1088;

11010

— 1496;

11011

— 1500;

Other

— Reserved.

Register 25

– DAC Control 3, Default 0011 0010

Bit Name

Bit

Description

DACRampRate

7:6

00

– 0.5 dB per 4 LRCK digital volume control ramp rate (default)

01

– 0.5 dB per 32 LRCK digital volume control ramp rate

10

– 0.5 dB per 64 LRCK digital volume control ramp rate

11

– 0.5 dB per 128 LRCK digital volume control ramp rate

DACSoftRamp

5

0

– disabled digital volume control soft ramp

1

– enabled digital volume control soft ramp (default)

DACZeroCrs

4

0

– disabled digital volume control change at zero cross

1

– enabled digital volume control change at zero cross (default)

DACLeR

3

0

– normal (default)

1

– both channel gain control is set by DAC left gain control register

DACMute

2

0

– normal (default)

1

– mute analog outputs for both channels

AutoMute

1

0

– disable

1

– enable (default)

Register 26

– DAC Control 4, Default 1100 0000

Bit Name

Bit

Description

LDACVOL

7:0

Digital volume control attenuates the signal in 0.5 dB incremental from 0 to

–96 dB.

00000000

– 0 dB

00000001

– -0.5 dB

00000010

– -1 dB

…

11000000

– -96 dB (default)

Register 27

– DAC Control 5, Default 1100 0000

Bit Name

Bit

Description

RDACVOL

7:0

Digital volume control attenuates the signal in 0.5 dB incremental from 0 to

–96 dB.

00000000

– 0 dB

00000001

– -0.5 dB

00000010

– -1 dB

…

11000000

– -96 dB (default)

Register 28

– DAC Control 6, Default 0000 1000

Bit Name

Bit

Description

DeemphasisMode

(DEEMP)

7:6

00

– de-emphasis frequency disabled (default)

01

– 32 KHz de-emphasis frequency in single speed mode

10

– 44.1 KHz de-emphasis frequency in single speed mode

11

– 48 KHz de-emphasis frequency in single speed mode