WM8994ECSSLASHR datasheet(9/363 Pages) CIRRUS

9 / 363 page

WM8994

Rev 4.6

PIN NO

NAME

TYPE

DESCRIPTION

HPOUT1R

Analogue Output

Right headphone output

HPOUT2N

Analogue Output

Earpiece speaker inverted output

HPOUT2P

Analogue Output

Earpiece speaker non-inverted output

IN1LN

Analogue Input

Left channel single-ended MIC input /

Left channel negative differential MIC input

IN1LP

Analogue Input

Left channel line input /

Left channel positive differential MIC input

IN1RN

Analogue Input

Right channel single-ended MIC input /

Right channel negative differential MIC input

IN1RP

Analogue Input

Right channel line input /

Right channel positive differential MIC input

IN2LN/

DMICDAT1

Analogue Input /

Digital Input

Left channel line input /

Left channel negative differential MIC input /

Digital MIC data input 1

IN2LP/VRXN

Analogue Input

Left channel line input /

Left channel positive differential MIC input /

Mono differential negative input (RXVOICE -)

IN2RN/

DMICDAT2

Analogue Input /

Digital Input

Right channel line input /

Right channel negative differential MIC input /

Digital MIC data input 2

IN2RP/VRXP

Analogue Input

Left channel line input /

Left channel positive differential MIC input /

Mono differential positive input (RXVOICE +)

LDO1ENA

Digital Input

Enable pin for LDO1

LDO1VDD

Supply

Supply for LDO1

LDO2ENA

Digital Input

Enable pin for LDO2

LDO2VDD

Supply

Supply for LDO2

LINEOUT1N

Analogue Output

Negative mono line output / Positive left or right line output

LINEOUT1P

Analogue Output

Positive mono line output / Positive left line output

LINEOUT2N

Analogue Output

Negative mono line output / Positive left or right line output

LINEOUT2P

Analogue Output

Positive mono line output / Positive left line output

LINEOUTFB

Analogue Input

Line output ground loop noise rejection feedback

LRCLK1

Digital Input / Output

Audio interface 1 left / right clock

MCLK1

Digital Input

Master clock 1

MICBIAS1

Analogue Output

Microphone bias 1

MICBIAS2

Analogue Output

Microphone bias 2

REFGND

Supply

Analogue ground

SCLK

Digital Input

Control interface clock input

SDA

Digital Input / Output

Control interface data input and output / 2-wire acknowledge output

SPKGND1

Supply

Ground for speaker driver (Return path for SPKVDD1)

SPKGND2

Supply

Ground for speaker driver (Return path for SPKVDD2)

SPKMODE

Digital Input

Mono / Stereo speaker mode select

SPKOUTLN

Analogue Output

Left speaker negative output

SPKOUTLP

Analogue Output

Left speaker positive output

SPKOUTRN

Analogue Output

Right speaker negative output

SPKOUTRP

Analogue Output

Right speaker positive output

SPKVDD1

Supply

Supply for speaker driver 1 (Left channel)

SPKVDD2

Supply

Supply for speaker driver 2 (Right channel)

VMIDC

Analogue Output

Midrail voltage decoupling capacitor

VREFC

Analogue Output

Bandgap reference decoupling capacitor

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