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

28-PIN QFN, 28-PIN SSOP PIN DESCRIPTIONS

The PA5331 is pin compatible to WM8731 except the yellow highlighted pins in the following table.

QFN

PIN

SSOP

PIN

NAME

I/O

DESCRIPTION

1

25

MCLK

I

Master clock

2

26

NC

No connect

3

27

DVDD

Supply

Digital core supply

4

28

DGND

Supply

Digital ground (return path for both DVDD and PVDD)

5

1

PVDD

Supply

Digital IO supply

6

2

NC

No connect

7

3

SCLK

I/O

Audio data bit clock

8

4

DSDIN

I

DAC audio data

9

5

DLRCK

I/O

DAC audio data left and right clock

10

6

ASDOUT

O

ADC audio data

11

7

ALRCK

I/O

ADC audio data left and right clock

12

8

HPVDD

Supply

Supply for analog output drivers (LOUT1/2, ROUT1/2)

13

9

LOUT2

O

Left output 2 (line or headphone)

14

10

ROUT2

O

Right output 2 (line or headphone)

15

11

HPGND

Supply

Ground for analog output drivers (LOUT1/2, ROUT1/2)

16

12

LOUT1

O

Left output 1 (line or headphone)

17

13

ROUT1

O

Right output 1 (line or headphone)

18

14

AVDD

Supply

Analog supply

19

15

AGND

Supply

Analog ground

20

16

VMID

O

Decoupling capacitor

21

17

MICBIAS

O

Microphone bias

22

18

LIN2

I

Left channel input 2

23

19

RIN1

I

Right channel input 1

24

20

LIN1

I

Left channel input 1

25

21

VREF

0

Decoupling capacitor

26

22

CE

I

Control select or device address selection

27

23

CDATA

I/O

Control data input or output

28

24

CCLK

I

Control clock input