WM8731SEFLSLASHR datasheet(2/64 Pages) WOLFSON

2 / 64 page

WM8731 / WM8731L

Production Data

PD, Rev 4.8, April 2009

TABLE OF CONTENTS

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

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

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

BLOCK DIAGRAM .................................................................................................1

PIN CONFIGURATION - 28 PIN SSOP.................................................................3

ORDERING INFORMATION ..................................................................................3

PIN CONFIGURATION – 28 PIN QFN ...................................................................4

ORDERING INFORMATION ..................................................................................4

PIN DESCRIPTION ................................................................................................5

ABSOLUTE MAXIMUM RATINGS.........................................................................6

RECOMMENDED OPERATING CONDITIONS – WM8731 ...................................6

RECOMMENDED OPERATING CONDITIONS – WM8731L.................................6

ELECTRICAL CHARACTERISTICS – WM8731 ....................................................7

TERMINOLOGY ............................................................................................................ 9

POWER CONSUMPTION – WM8731 ..................................................................10

ELECTRICAL CHARACTERISTICS – WM8731L................................................11

TERMINOLOGY .......................................................................................................... 13

POWER CONSUMPTION – WM8731L................................................................14

MASTER CLOCK TIMING....................................................................................15

DIGITAL AUDIO INTERFACE – MASTER MODE ....................................................... 16

DIGITAL AUDIO INTERFACE – SLAVE MODE .......................................................... 17

MPU INTERFACE TIMING .......................................................................................... 18

DEVICE DESCRIPTION.......................................................................................20

INTRODUCTION ......................................................................................................... 20

AUDIO SIGNAL PATH................................................................................................. 21

DEVICE OPERATION ................................................................................................. 34

AUDIO DATA SAMPLING RATES............................................................................... 41

ACTIVATING DSP AND DIGITAL AUDIO INTERFACE .............................................. 45

SOFTWARE CONTROL INTERFACE......................................................................... 45

POWER DOWN MODES ............................................................................................ 47

REGISTER MAP ......................................................................................................... 49

DIGITAL FILTER CHARACTERISTICS ...............................................................54

TERMINOLOGY .......................................................................................................... 55

DAC FILTER RESPONSES .................................................................................56

ADC FILTER RESPONSES .................................................................................57

ADC HIGH PASS FILTER ........................................................................................... 58

DIGITAL DE-EMPHASIS CHARACTERISTICS...................................................58

DIGITAL DE-EMPHASIS CHARACTERISTICS...................................................59

APPLICATIONS INFORMATION .........................................................................60

RECOMMENDED EXTERNAL COMPONENTS.......................................................... 60

MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS........................................ 61

PACKAGE DIMENSIONS - SSOP .......................................................................62

PACKAGE DIMENSIONS - QFN..........................................................................63

IMPORTANT NOTICE ..........................................................................................64

ADDRESS: .................................................................................................................. 64

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