WM8734
Production Data
TABLE OF CONTENTS
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................1
PIN CONFIGURATION – SSOP.............................................................................3
ORDERING INFORMATION - SSOP .....................................................................3
PIN DESCRIPTION - SSOP ...................................................................................4
PIN CONFIGURATION – QFN ...............................................................................5
ORDERING INFORMATION - QFN........................................................................5
PIN DESCRIPTION - QFN......................................................................................6
ABSOLUTE MAXIMUM RATINGS.........................................................................7
RECOMMENDED OPERATING CONDITIONS .....................................................7
ELECTRICAL CHARACTERISTICS ......................................................................8
TERMINOLOGY.....................................................................................................9
POWER CONSUMPTION (EXAMPLES) .............................................................10
MASTER CLOCK TIMING....................................................................................11
DIGITAL AUDIO INTERFACE – MASTER MODE....................................................... 11
DIGITAL AUDIO INTERFACE – SLAVE MODE .......................................................... 12
MPU INTERFACE TIMING.......................................................................................... 14
DEVICE DESCRIPTION.......................................................................................16
AUDIO SIGNAL PATH................................................................................................. 16
DEVICE OPERATION ................................................................................................. 22
AUDIO DATA SAMPLING RATES............................................................................... 27
ACTIVATING DSP AND DIGITAL AUDIO INTERFACE .............................................. 32
SOFTWARE CONTROL INTERFACE......................................................................... 32
POWER DOWN MODES ............................................................................................ 34
REGISTER MAP ......................................................................................................... 36
DIGITAL FILTER CHARACTERISTICS...............................................................38
TERMINOLOGY.......................................................................................................... 39
DAC FILTER RESPONSES .................................................................................39
ADC FILTER RESPONSES .................................................................................39
ADC HIGH PASS FILTER ........................................................................................... 40
DIGITAL DE-EMPHASIS CHARACTERISTICS...................................................40
APPLICATIONS INFORMATION .........................................................................42
RECOMMENDED EXTERNAL COMPONENTS.......................................................... 42
MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS........................................ 43
PACKAGE DIMENSIONS (SSOP).......................................................................44
PACKAGE DIMENSIONS (QFN) .........................................................................45
IMPORTANT NOTICE..........................................................................................46
ADDRESS: .................................................................................................................. 46
PD Rev 4.1 November 2006
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
