WM8991 datasheet(7/174 Pages) WOLFSON

7 / 174 page

Pre-Production

WM8991

PP, May 2008, Rev 3.1

PIN NO

NAME

TYPE

DESCRIPTION

MODE

Digital Input

Selects 2-wire or 3/4 -wire control

CSB /

ADDR

Digital Input

3/4 -wire chip select or 2-wire address select

SCLK

Digital Input

Control interface clock input

SDIN

Digital Input / Output

Control interface data input / 2-wire acknowledge output

SPKP

Analogue Output

Speaker positive output

SPKN

Analogue Output

Speaker negative output

LOUT

Analogue Output

Left headphone output

ROUT

Analogue Output

Right headphone output

OUT3

Analogue Output

Inverted left headphone output / Mono inverted output

OUT4

Analogue Output

Inverted right headphone output / Mono non-inverted output

LON

Analogue Output

Negative left line output / Positive right line output

LOP

Analogue Output

Positive left line output

RON

Analogue Output

Negative right line output / Positive left line output

ROP

Analogue Output

Positive right line output

VMID

Analogue Output

Mid-rail voltage decoupling capacitor

GPIO2 /

MCLK2

Digital Input / Output

Alternative MCLK / GPIO pin

GPIO3 /

BCLK2

Digital Input / Output

Alternative BCLK / GPIO pin

GPIO4 /

DACLRC2

Digital Input / Output

Alternative DACLRC / GPIO pin

GPIO5 /

DACDAT2

Digital Input / Output

Alternative DACDAT / GPIO pin

GPIO6 /

ADCLRCB

Digital Input / Output

Inverted ADCLRC / GPIO pin

Not connected

WM8991 Datasheet(PDF) 7 Page - Wolfson Microelectronics plc

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