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

DAC_invL

5

0

– normal DAC left channel analog output no phase inversion (default)

1

– normal DAC left channel analog output 180 degree phase inversion

DAC_invR

4

0

– normal DAC right channel analog output no phase inversion (default)

1

– normal DAC right analog output 180 degree phase inversion

ClickFree

3

0

– disable digital click free power up and down

1

– enable digital click free power up and down (default)

Register 29

– DAC Control 7, Default 0000 0110

Bit Name

Bit

Description

ZeroL

7

0

– normal (default)

1

– set Left Channel DAC output all zero

ZeroR

6

0

– normal (default)

1

– set Right Channel DAC output all zero

Mono

5

0

– stereo (default)

1

– mono (L+R)/2 into DACL and DACR

SE

4:2

SE strength, total 8 settings, L=L+(L-R)*a, R=R+(R-L)*a, where a is from 0 to 7/8

000

– 0 (default)

……

111

– 7/8

Vpp_scale

1:0

00

– Vpp set at 3.5V (0.7 modulation index) (default)

01

– Vpp set at 4.0V

10

– Vpp set at 3.0V

11

– Vpp set at 2.5V

Register 30

– DAC Control 8, Default 0001 1111

Bit Name

Bit

Description

Shelving_a[29:24]

5:0

30-bit a coefficient for shelving filter

Default value is {5'h0f, 5'h1f, 5'h0f, 5'h1f, 5'h0f, 5'h1f}

Register 31

– DAC Control 9, Default 1111 0111

Bit Name

Bit

Description

Shelving_a[23:16]

7:0

30-bit a coefficient for shelving filter

Default value is {5'h0f, 5'h1f, 5'h0f, 5'h1f, 5'h0f, 5'h1f}

Register 32

– DAC Control 10, Default 1111 1101

Bit Name

Bit

Description

Shelving_a[15:8]

7:0

30-bit a coefficient for shelving filter

Default value is {5'h0f, 5'h1f, 5'h0f, 5'h1f, 5'h0f, 5'h1f}

Register 33

– DAC Control 11, Default 1111 1111

Bit Name

Bit

Description

Shelving_a[7:0]

7:0

30-bit a coefficient for shelving filter

Default value is {5'h0f, 5'h1f, 5'h0f, 5'h1f, 5'h0f, 5'h1f}

Register 34

– DAC Control 12, Default 0001 1111

Bit Name

Bit

Description

Shelving_b[29:24]

5:0

30-bit a coefficient for shelving filter

Default value is {5'h0f, 5'h1f, 5'h0f, 5'h1f, 5'h0f, 5'h1f}

Register 35

– DAC Control 13, Default 1111 0111

Bit Name

Bit

Description

Shelving_b[23:16]

7:0

30-bit a coefficient for shelving filter

Default value is {5'h0f, 5'h1f, 5'h0f, 5'h1f, 5'h0f, 5'h1f}