WM8758B Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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WM8758B

Stereo CODEC with Headphone Driver and Line Out

Wolfson Microelectronics plc 

Production Data

PIN DESCRIPTION

PIN

NAME

TYPE

1

LIP

Analogue Input

2

LIN

Analogue Input

3

L2/GPIO2

Analogue Input

4

RIP

Analogue Input

5

RIN

Analogue Input

6

R2/GPIO3

Analogue Input

7

LRC

Digital Input / Output

8

BCLK

Digital Input / Output

9

ADCDAT

Digital Output

10

DACDAT

Digital Input

11

MCLK

Digital Input

12

DGND

Supply

13

DCVDD

Supply

14

DBVDD

Supply

15

CSB/GPIO1

Digital Input / Output

16

SCLK

Digital Input

17

SDIN

Digital Input / Output

18

MODE

Digital Input

19

HP_COM

Analogue Input

20

LINE_COM

Analogue Input

21

OUT4

Analogue Output

22

OUT3

Analogue Output

23

ROUT2

Analogue Output

24

AGND2

Supply

25

LOUT2

Analogue Output

26

AVDD2

Supply

27

VMID

Reference

28

AGND1

Supply

29

ROUT1

30

LOUT1

31

AVDD1

32

MICBIAS

Analogue Output

Analogue Output

Supply

Analogue Output

WM8758B

DESCRIPTION

Left MIC pre-amp positive input

Left MIC pre-amp negative input

Left channel line input/secondary mic pre-amp positive input/GPIO2 pin

Right MIC pre-amp positive input

Right MIC pre-amp negative input

Right channel line input/secondary mic pre-amp positive input/GPIO3 pin

DAC and ADC sample rate clock

Digital audio bit clock

ADC digital audio data output

DAC digital audio data input

Master clock input

Digital ground

Digital core logic supply

Digital buffer (I/O) supply

3-Wire control interface chip select / GPIO1 pin

3-Wire control interface clock input / 2-wire control interface clock input

3-Wire control interface data input / 2-Wire control interface data input

Control interface selection

Headphone ground common feedback input

Line out ground common feedback input

Right line output / mono mix output

Left line output / mono mix output

Line output right 2

Analogue ground (return path for ROUT2/LOUT2)

Line output left 2

Analogue supply (supply for output amplifiers ROUT2/LOUT2)

Decoupling for ADC and DAC reference voltage

Analogue ground (return path for all input amplifiers, PLL, ADC and

DAC, internal bias circuits, output amplifiers LOUT1, ROUT1 and

OUT3/OUT4 on AVDD1 AGND1)

Line or headphone output right 1

Line or headphone output left 1

Analogue supply (feeds all input amplifiers, PLL, ADC and DAC, internal

bias circuits, output amplifiers LOUT1, ROUT1))

Microphone bias

Note:

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

w

PD, Rev 4.4, January 2012

5

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