WM8740

Advanced Information

WOLFSON MICROELECTRONICS LTD

AI Rev 1.7 July 2000

2

PIN CONFIGURATION

ORDERING INFORMATION

DEVICE

TEMP. RANGE

PACKAGE

XWM8740EDS

-25

° to +85°C

28-pin SSOP

16

15

14

20

19

18

17

5

6

7

1

2

3

4

13

12

11

8

9

10

BCKIN

VOUTRN

VOUTLN

LRCIN

DIN

ZERO

MUTEB

MODE

RSTB

CSBIWO

MD/DM0

MC/DM1

ML/I2S

VMIDR

VMIDL

SCLK

DIFFHW

MODE8X

AGNDR

AGNDL

AVDDR

DVDD

AVDDL

DGND

21

22

23

24

25

26

27

28

VOUTRP

AGND

VOUTLP

AVDD

PIN DESCRIPTION

PIN

NAME

TYPE

DESCRIPTION

1

LRCIN

Digital input

Sample rate clock input.

2

DIN

Digital input

Audio data serial input (except in 8XMODE when it is DINL).

3

BCKIN

Digital input

Audio data bit clock input .

4

MODE8X

Digital input

Internal pull-down, active high, 8 x fs mode.

5

SCLK

Digital input

System clock input.

6

DIFFHW

Digital input

Internal pull-down, active high, differential mono mode.

7

DGND

Supply

Digital ground supply.

8

DVDD

Supply

Digital positive supply.

9

AVDDR

Supply

Analogue positive supply.

10

AGNDR

Supply

Analogue ground supply.

11

VMIDR

Analogue output

Mid rail right channel.

12

VOUTRP

Analogue output

Right channel DAC output positive.

13

VOUTRN

Analogue output

Right channel DAC output negative.

14

AGND

Supply

Analogue ground supply.

15

AVDD

Supply

Analogue positive supply.

16

VOUTLN

Analogue output

Left channel DAC output negative.

17

VOUTLP

Analogue output

Left channel DAC output positive.

18

VMIDL

Analogue output

Mid rail left channel.

19

AGNDL

Supply

Analogue ground supply.

20

AVDDL

Supply

Analogue positive supply.

21

ZERO

Digital output

Infinite zero detect – active low. Open drain type output with active pull-down.

22

RSTB

Digital input

Reset input – active low. Internal pull-up.