WM8281ECSSLASHR datasheet(3/392 Pages) CIRRUS

3 / 392 page

WM8281

Rev 4.0

TABLE OF CONTENTS

DESCRIPTION................................................................................................................ 1

FEATURES ..................................................................................................................... 1

APPLICATIONS ............................................................................................................. 1

BLOCK DIAGRAM ......................................................................................................... 2

TABLE OF CONTENTS.................................................................................................. 3

PIN CONFIGURATION ................................................................................................... 7

ORDERING INFORMATION........................................................................................... 8

PIN DESCRIPTION......................................................................................................... 8

ABSOLUTE MAXIMUM RATINGS ............................................................................... 14

RECOMMENDED OPERATING CONDITIONS............................................................ 15

ELECTRICAL CHARACTERISTICS ............................................................................ 16

TERMINOLOGY .......................................................................................................................27

THERMAL CHARACTERISTICS.................................................................................. 28

TYPICAL PERFORMANCE .......................................................................................... 29

TYPICAL POWER CONSUMPTION ........................................................................................29

TYPICAL SIGNAL LATENCY...................................................................................................30

SIGNAL TIMING REQUIREMENTS ............................................................................. 31

SYSTEM CLOCK & FREQUENCY LOCKED LOOP (FLL) ......................................................31

AUDIO INTERFACE TIMING ...................................................................................................33

DIGITAL MICROPHONE (DMIC) INTERFACE TIMING ...............................................................................................................33

DIGITAL SPEAKER (PDM) INTERFACE TIMING ........................................................................................................................34

DIGITAL AUDIO INTERFACE - MASTER MODE .........................................................................................................................35

DIGITAL AUDIO INTERFACE - SLAVE MODE ............................................................................................................................36

DIGITAL AUDIO INTERFACE - TDM MODE ................................................................................................................................37

CONTROL INTERFACE TIMING .............................................................................................38

2-WIRE (I2C) CONTROL MODE ...................................................................................................................................................38

4-WIRE (SPI) CONTROL MODE...................................................................................................................................................39

SLIMBUS INTERFACE TIMING...............................................................................................40

JTAG INTERFACE TIMING .....................................................................................................42

DEVICE DESCRIPTION ............................................................................................... 43

INTRODUCTION ......................................................................................................................43

HI-FI AUDIO CODEC.....................................................................................................................................................................43

DIGITAL AUDIO CORE .................................................................................................................................................................44

DIGITAL INTERFACES .................................................................................................................................................................44

OTHER FEATURES ......................................................................................................................................................................45

INPUT SIGNAL PATH ..............................................................................................................46

ANALOGUE MICROPHONE INPUT .............................................................................................................................................47

ANALOGUE LINE INPUT ..............................................................................................................................................................48

DIGITAL MICROPHONE INPUT ...................................................................................................................................................48

INPUT SIGNAL PATH ENABLE ....................................................................................................................................................50

INPUT SIGNAL PATH SAMPLE RATE CONTROL ......................................................................................................................51

INPUT SIGNAL PATH CONFIGURATION ....................................................................................................................................51

INPUT SIGNAL PATH DIGITAL VOLUME CONTROL .................................................................................................................56

INPUT SIGNAL PATH ANC CONTROL ........................................................................................................................................61

DIGITAL MICROPHONE INTERFACE PULL-DOWN ...................................................................................................................61

DIGITAL CORE ........................................................................................................................62

DIGITAL CORE MIXERS...............................................................................................................................................................64

DIGITAL CORE INPUTS ...............................................................................................................................................................67

DIGITAL CORE OUTPUT MIXERS ...............................................................................................................................................68

MIC MUTE MIXER.........................................................................................................................................................................71

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