WM8751L

Production Data

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PD Rev 4.2 August 2006

4

PIN DESCRIPTION

PIN NO

NAME

TYPE

DESCRIPTION

1

MCLK

Digital Input

Master Clock

2

DCVDD

Supply

Digital Core Supply

3

DBVDD

Supply

Digital Buffer (I/O) Supply

4

DGND

Supply

Digital Ground (return path for both DCVDD and DBVDD)

5

BCLK

Digital Input / Output

Audio Interface Bit Clock

6

DACDAT

Digital Input

DAC Digital Audio Data

7

DACLRC

Digital Input / Output

Audio Interface Left / Right Clock

8

NC

No Connect

Leave this pin unconnected

9

AGND2

Supply

Internally connected to AGND. Leave this pin floating or connect to

AGND.

10

MONOOUT

Analogue Output

Mono Output

11

OUT3

Analogue Output

Output 3 (can be used as Headphone Pseudo Ground)

12

ROUT1

Analogue Output

Right Output 1 (Line or Headphone)

13

LOUT1

Analogue Output

Left Output 1 (Line or Headphone)

14

HPGND

Supply

Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2)

15

ROUT2

Analogue Output

Right Output 1 (Line or Headphone or Speaker)

16

LOUT2

Analogue Output

Left Output 1 (Line or Headphone or Speaker)

17

HPVDD

Supply

Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2,

MONOUT)

18

AVDD

Supply

Analogue Supply

19

AGND

Supply

Analogue Ground (return path for AVDD)

20

VREF

Analogue Output

Reference Voltage Decoupling Capacitor

21

VMID

Analogue Output

Midrail Voltage Decoupling Capacitor

22

NC

No Connect

No Internal Connection

23

HPDETECT

Logic Input

Headphone / Speaker switch (referred to AVDD)

24

NC

No Connect

No Internal Connection

25

MONOIN-

Analogue Input

Negative end of MONOIN+, for differential mono signals

26

MONOIN+

Analogue Input

Analogue Line-in to mixers (mono channel)

27

LINEINR

Analogue Input

Analogue Line-in to mixers (right channel)

28

LINEINL

Analogue Input

Analogue Line-in to mixers (left channel)

29

MODE

Digital Input

Control Interface Selection

30

CSB

Digital Input

Chip Select / Device Address Selection

31

SDIN

Digital Input/Output

Control Interface Data Input / 2-wire Acknowledge output

32

SCLK

Digital Input

Control Interface Clock Input

Note:

It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.