WM8766

Preliminary Technical Data

w

PTD Rev 2.3 February 2004

2

TABLE OF CONTENTS

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

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

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

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

TABLE OF CONTENTS .........................................................................................2

PIN CONFIGURATION 28 LEAD SSOP ...............................................................3

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

PIN DESCRIPTION – 28 PIN SSOP ......................................................................4

ABSOLUTE MAXIMUM RATINGS .........................................................................5

RECOMMENDED OPERATING CONDITIONS .....................................................6

ELECTRICAL CHARACTERISTICS ......................................................................6

TERMINOLOGY ............................................................................................................ 7

MASTER CLOCK TIMING ............................................................................................. 7

DIGITAL AUDIO INTERFACE – MASTER MODE ......................................................... 8

TABLE 2 DIGITAL AUDIO DATA TIMING – MASTER MODE ...................................... 8

DIGITAL AUDIO INTERFACE – SLAVE MODE ............................................................ 9

MPU INTERFACE TIMING .......................................................................................... 10

DEVICE DESCRIPTION .......................................................................................11

INTRODUCTION ......................................................................................................... 11

AUDIO DATA SAMPLING RATES............................................................................... 11

HARDWARE CONTROL MODES ............................................................................... 12

DIGITAL AUDIO INTERFACE ..................................................................................... 14

POWERDOWN MODES ............................................................................................. 17

ZERO DETECT ........................................................................................................... 18

SOFTWARE CONTROL INTERFACE OPERATION................................................... 18

CONTROL INTERFACE REGISTERS ........................................................................ 18

REGISTER MAP...................................................................................................26

DIGITAL FILTER CHARACTERISTICS ...............................................................27

DAC FILTER RESPONSES .................................................................................27

DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 28

APPLICATIONS INFORMATION .........................................................................29

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 29

SUGGESTED ANALOGUE LOW PASS POST DAC FILTERS ................................... 30

PACKAGE DIMENSIONS ....................................................................................31

IMPORTANT NOTICE ..........................................................................................32

ADDRESS: .................................................................................................................. 32