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WM8731SEDS Datasheet(PDF) 2 Page - Wolfson Microelectronics plc |
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2 / 63 page WM8731 / WM8731L Production Data w PD Rev 4.3 August 2006 2 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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