WM8956 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

WM8956

Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers

Cirrus Logic 

WM8956

PIN DESCRIPTION

Production Data

PIN NO

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

NAME

MICBIAS

LINPUT3 / JD2

LINPUT2

LINPUT1

RINPUT1

RINPUT2

RINPUT3 / JD3

DCVDD

DGND

DBVDD

MCLK

BCLK

DACLRC

DACDAT

GPIO1

DNC

SCLK

SDIN

SPK_RN

SPKGND2

SPKVDD2

SPK_RP

SPK_LN

SPKGND1

SPK_LP

SPKVDD1

VMID

AGND

HP_R

OUT3

HP_L

AVDD

GND_PADDLE

TYPE

Analogue Output

Analogue Input

Analogue Input

Analogue Input

Analogue Input

Analogue Input

Analogue Input

Supply

Supply

Supply

Digital Input

Digital Input / Output

Digital Input / Output

Digital Input

Digital Input / Output

Do not connect

Digital Input

Digital Input/Output

Analogue Output

Supply

Supply

Analogue Output

Analogue Output

Supply

Analogue Output

Supply

Analogue Output

Supply

Analogue Output

Analogue Output

Analogue Output

Supply

DESCRIPTION

Microphone bias

Left channel line input /

Left channel positive differential MIC input /

Jack detect input pin

Left channel line input /

Left channel positive differential MIC input

Left channel single-ended MIC input /

Left channel negative differential MIC input

Right channel single-ended MIC input /

Right channel negative differential MIC input

Right channel line input /

Right channel positive differential MIC input

Right channel line input /

Right channel positive differential MIC input /

Jack detect input pin

Digital core supply

Digital ground (Return path for both DCVDD and DBVDD)

Digital buffer (I/O) supply

Master clock

Audio interface bit clock

Audio interface DAC left / right clock

DAC digital audio data

GPIO1 pin

Leave this pin floating

Control interface clock input

Control interface data input / 2-wire acknowledge output

Right speaker negative output

Ground for speaker drivers 2

Supply for speaker drivers 2

Right speaker positive output

Left speaker negative output

Ground for speaker drivers 1

Left speaker positive output

Supply for speaker drivers 1

Midrail voltage decoupling capacitor

Analogue ground (Return path for AVDD)

Right output (Line or headphone)

Mono, left, right or buffered midrail output for capless mode

Left output (Line or headphone)

Analogue supply

Die Paddle (Note 1)

Note:

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

2. Refer to the application note WAN_0118 on “Guidelines on How to Use QFN Packages and Create Associated PCB

Footprints”

w

PD, November 2011, Rev 4.1

4

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