WM8731SEDSSLASHR datasheet(2/63 Pages) WOLFSON

2 / 63 page

WM8731 / WM8731L

Production Data

PD Rev 4.3 August 2006

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 ................................................................................................. 33

AUDIO DATA SAMPLING RATES............................................................................... 40

ACTIVATING DSP AND DIGITAL AUDIO INTERFACE .............................................. 44

SOFTWARE CONTROL INTERFACE......................................................................... 44

POWER DOWN MODES ............................................................................................ 46

REGISTER MAP ......................................................................................................... 48

DIGITAL FILTER CHARACTERISTICS ...............................................................53

TERMINOLOGY .......................................................................................................... 54

DAC FILTER RESPONSES .................................................................................55

ADC FILTER RESPONSES .................................................................................56

ADC HIGH PASS FILTER ........................................................................................... 57

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

APPLICATIONS INFORMATION .........................................................................59

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 59

MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS........................................ 60

PACKAGE DIMENSIONS - SSOP .......................................................................61

PACKAGE DIMENSIONS - QFN..........................................................................62

IMPORTANT NOTICE ..........................................................................................63

ADDRESS: .................................................................................................................. 63

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