WM8721 datasheet(4/37 Pages) WOLFSON

4 / 37 page

WM8721 / WM8721L

Production Data

PD Rev 4.0 November 2004

PIN DESCRIPTION

20 PIN

SSOP

NAME

TYPE

DESCRIPTION

DBVDD

Supply

Digital Buffers VDD

BCLK

Digital Input/Output

Digital Audio Port Clock

DACDAT

Digital Input

DAC Digital Audio Data Input

DACLRC

Digital Input/Output

DAC Sample Rate Clock

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

MODE

Digital Input

Control Interface Selection, Pull up (when ACTIVE not set)

CSB

Digital Input

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

selection, active low, Pull up (when ACTIVE not set)

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

MCLK

Digital Input

Master Clock Input (MCLK)

DCVDD

Supply

Digital Core VDD

DGND

Ground

Digital GND

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