WM8766
Preliminary Technical Data
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
PTD Rev 2.3 February 2004
w
2
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
