WM8722

Advanced Information

WOLFSON MICROELECTRONICS LTD

AI Rev 1.5 May 2000

2

PIN CONFIGURATION

ORDERING INFORMATION

DEVICE

TEMP. RANGE

PACKAGE

XWM8722EDS

-25 to +85

20-pin SSOP

MXINL

CAP

DVDD

DIN

LRCIN

SCKI

BCKIN

DGND

MD

TCLK

AVDD

LINEOUTL

VAROUTL

LINEOUTR

16

15

14

20

19

18

17

5

6

7

1

2

3

4

MXINR

BUSY

LATCH

MC

13

12

11

8

9

10

AGND

VAROUTR

PIN DESCRIPTION

PIN

NAME

TYPE

DESCRIPTION

1

TCLK

Digital input

Tone generator master-clock input.

2

MC

Digital input

Serial control data clock input (SPI mode) or 2-wire clock input (2-wire

mode)

3

MD

Digital input

Serial control data input (SPI mode) or 2-wire data input (2-wire mode)

4

LATCH

Digital input

Latch enable (SPI mode) or address select (2-wire mode).

5

BUSY

Digital I/O

Interface format input pin (0= SPI; 1 = 2-WIRE) or BUSY flag output.

6

DGND

Supply

Digital ground supply.

7

MXINR

Analogue input

Analogue mixer input (right channel).

8

VAROUTR

Analogue output

Right channel mixer output (variable level).

9

LINEOUTR

Analogue output

Right channel mixer output (line level).

10

AGND

Supply

Analogue ground supply.

11

AVDD

Supply

Analogue positive supply.

12

LINEOUTL

Analogue output

Left channel mixer output (line level).

13

VAROUTL

Analogue output

Left channel mixer output (variable level).

14

MXINL

Analogue input

Analogue mixer input (left channel).

15

CAP

Analogue output

Analogue internal reference.

16

DVDD

Supply

Digital positive supply.

17

DIN

Digital input

Serial audio data input.

18

LRCIN

Digital input

Sample rate clock input.

19

BCKIN

Digital input

Audio data bit clock input.

20

SCKI

Digital input

System clock input (256 or 384fs).

Note: 1.

Digital input pins have Schmitt trigger input buffers.