WM8731 datasheet(6/56 Pages) WOLFSON

6 / 56 page

WM8731

Advanced Information

WOLFSON MICROELECTRONICS LTD

AI Rev 2.0 February 2001

PIN CONFIGURATION

ORDERING INFORMATION

DEVICE

TEMP. RANGE

PACKAGE

XWM8731EDS

-10 to +70

28-pin SSOP

AVDD

AGND

MICBIAS

VMID

MICIN

RLINEIN

LLINEIN

DCVDD

MODE

CSB

SDIN

SCLK

XTO

XTI/MCLK

CLKOUT

DGND

ADCLRC

ADCDAT

DACDAT

DACLRC

BCLK

DBVDD

LHPOUT

HPGND

HPVDD

RHPOUT

LOUT

ROUT

PIN DESCRIPTION

NAME

TYPE

DESCRIPTION

DBVDD

Supply

Digital Buffers VDD

CLKOUT

Digital Output

Buffered Clock Output

BCLK

Digital Input/Output

Digital Audio Bit Clock, Pull Down, (see Note 1)

DACDAT

Digital Input

DAC Digital Audio Data Input

DACLRC

Digital Input/Output

DAC Sample Rate Left/Right Clock, Pull Down (see Note 1)

ADCDAT

Digital Output

ADC Digital Audio Data Output

ADCLRC

Digital Input/Output

ADC Sample Rate Left/Right Clock, Pull Down (see Note 1)

HPVDD

Supply

Headphone VDD

LHPOUT

Analogue Output

Left Channel Headphone Output

RHPOUT

Analogue Output

Right Channel Headphone Output

HPGND

Ground

Headphone GND

LOUT

Analogue Output

Left Channel Line Output

ROUT

Analogue Output

Right Channel Line Output

AVDD

Supply

Analogue VDD

AGND

Ground

Analogue GND

VMID

Analogue Output

Mid-rail reference decoupling point

MICBIAS

Analogue Output

Electret Microphone Bias

MICIN

Analogue Input

Microphone Input (AC coupled)

RLINEIN

Analogue Input

Right Channel Line Input (AC coupled)

LLINEIN

Analogue Input

Left Channel Line Input (AC coupled)

MODE

Digital Input

Control Interface Selection, Pull Up (see Note 1)

CSB

Digital Input

3-Wire MPU Chip Select/ 2-Wire MPU interface address selection,

active low, Pull up (see Note 1)

SDIN

Digital Input/Output

3-Wire MPU Data Input / 2-Wire MPU Data Input

SCLK

Digital Input

3-Wire MPU Clock Input / 2-Wire MPU Clock Input

XTI/MCLK

Digital Input

Crystal Input or Master Clock Input (MCLK)

XTO

Digital Output

Crystal Output

DCVDD

Supply

Digital Core VDD

DGND

Ground

Digital GND

Note:

Pull Up/Down only present when Control Register Interface ACTIVE=0 to conserve power.

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