WM8998 datasheet(3/307 Pages) WOLFSON

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Production Data

WM8998

PD, October 2014, 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............................................................................... 12

RECOMMENDED OPERATING CONDITIONS............................................................ 13

ELECTRICAL CHARACTERISTICS ............................................................................ 14

TERMINOLOGY.....................................................................................................................24

THERMAL CHARACTERISTICS.................................................................................. 25

TYPICAL PERFORMANCE.......................................................................................... 26

TYPICAL POWER CONSUMPTION ......................................................................................26

TYPICAL SIGNAL LATENCY .................................................................................................27

SIGNAL TIMING REQUIREMENTS ............................................................................. 28

SYSTEM CLOCK & FREQUENCY LOCKED LOOP (FLL) .....................................................28

AUDIO INTERFACE TIMING .................................................................................................30

DIGITAL MICROPHONE (DMIC) INTERFACE TIMING............................................................................................................ 30

DIGITAL SPEAKER (PDM) INTERFACE TIMING..................................................................................................................... 31

DIGITAL AUDIO INTERFACE - MASTER MODE ..................................................................................................................... 32

DIGITAL AUDIO INTERFACE - SLAVE MODE ........................................................................................................................ 33

DIGITAL AUDIO INTERFACE - TDM MODE ............................................................................................................................ 34

CONTROL INTERFACE TIMING ...........................................................................................35

SLIMBUS INTERFACE TIMING .............................................................................................36

DEVICE DESCRIPTION ............................................................................................... 37

INTRODUCTION....................................................................................................................37

HI-FI AUDIO CODEC ............................................................................................................................................................... 37

DIGITAL AUDIO CORE ............................................................................................................................................................ 38

DIGITAL INTERFACES ............................................................................................................................................................ 38

OTHER FEATURES................................................................................................................................................................. 39

INPUT SIGNAL PATH............................................................................................................40

ANALOGUE MICROPHONE INPUT......................................................................................................................................... 41

ANALOGUE LINE INPUT ......................................................................................................................................................... 42

DIGITAL MICROPHONE INPUT............................................................................................................................................... 42

INPUT SIGNAL PATH ENABLE ............................................................................................................................................... 44

INPUT SIGNAL PATH SAMPLE RATE CONTROL................................................................................................................... 45

INPUT SIGNAL PATH CONFIGURATION................................................................................................................................ 45

INPUT SIGNAL PATH DIGITAL VOLUME CONTROL.............................................................................................................. 49

DIGITAL MICROPHONE INTERFACE PULL-DOWN ............................................................................................................... 52

DIGITAL CORE......................................................................................................................53

DIGITAL CORE MIXERS.......................................................................................................................................................... 56

DIGITAL CORE INPUTS .......................................................................................................................................................... 58

DIGITAL CORE OUTPUTS ...................................................................................................................................................... 59

5-BAND PARAMETRIC EQUALISER (EQ)............................................................................................................................... 62

DYNAMIC RANGE CONTROL (DRC) ...................................................................................................................................... 66

LOW PASS / HIGH PASS DIGITAL FILTER (LHPF)................................................................................................................. 75

SPDIF OUTPUT GENERATOR................................................................................................................................................ 78

TONE GENERATOR................................................................................................................................................................ 80

HAPTIC SIGNAL GENERATOR ............................................................................................................................................... 82

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