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WM8974 Datasheet(PDF) 2 Page - Wolfson Microelectronics plc |
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WM8974 Datasheet(HTML) 2 Page - Wolfson Microelectronics plc |
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2 / 87 page  WM8974 Production Data w PD Rev 4.2 March 2007 2 TABLE OF CONTENTS DESCRIPTION .......................................................................................................1 FEATURES.............................................................................................................1 APPLICATIONS .....................................................................................................1 TABLE OF CONTENTS .........................................................................................2 PIN CONFIGURATION...........................................................................................3 ORDERING INFORMATION ..................................................................................3 PIN DESCRIPTION ................................................................................................4 ABSOLUTE MAXIMUM RATINGS .........................................................................5 RECOMMENDED OPERATING CONDITIONS .....................................................5 ELECTRICAL CHARACTERISTICS ......................................................................6 TERMINOLOGY ............................................................................................................ 8 SIGNAL TIMING REQUIREMENTS .......................................................................9 SYSTEM CLOCK TIMING ............................................................................................. 9 AUDIO INTERFACE TIMING – MASTER MODE .......................................................... 9 AUDIO INTERFACE TIMING – SLAVE MODE............................................................ 10 CONTROL INTERFACE TIMING – 3-WIRE MODE .................................................... 11 CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 12 DEVICE DESCRIPTION .......................................................................................13 INTRODUCTION ......................................................................................................... 13 INPUT SIGNAL PATH ................................................................................................. 14 ANALOGUE TO DIGITAL CONVERTER (ADC).......................................................... 19 INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC) .......................................... 23 OUTPUT SIGNAL PATH ............................................................................................. 35 ANALOGUE OUTPUTS............................................................................................... 42 OUTPUT SWITCH ...................................................................................................... 47 DIGITAL AUDIO INTERFACES................................................................................... 49 AUDIO SAMPLE RATES............................................................................................. 54 MASTER CLOCK AND PHASE LOCKED LOOP (PLL) ............................................... 55 GENERAL PURPOSE INPUT/OUTPUT...................................................................... 57 CONTROL INTERFACE.............................................................................................. 57 RESETTING THE CHIP........................................................................................58 POWER SUPPLIES .................................................................................................... 58 POWER MANAGEMENT ............................................................................................ 63 REGISTER MAP...................................................................................................65 REGISTER BITS BY ADDRESS ................................................................................. 66 DIGITAL FILTER CHARACTERISTICS ...............................................................77 TERMINOLOGY .......................................................................................................... 77 DAC FILTER RESPONSES......................................................................................... 78 ADC FILTER RESPONSES......................................................................................... 78 DE-EMPHASIS FILTER RESPONSES........................................................................ 79 HIGHPASS FILTER..................................................................................................... 80 5-BAND EQUALISER .................................................................................................. 81 APPLICATIONS INFORMATION .........................................................................85 RECOMMENDED EXTERNAL COMPONENTS.......................................................... 85 PACKAGE DIAGRAM ..........................................................................................86 IMPORTANT NOTICE ..........................................................................................87 ADDRESS: .................................................................................................................. 87 |
Similar Part No. - WM8974_07 |
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Similar Description - WM8974_07 |
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