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WM9711 Datasheet(PDF) 2 Page - Wolfson Microelectronics plc |
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WM9711 Datasheet(HTML) 2 Page - Wolfson Microelectronics plc |
2 / 66 page ![]() WM9711L Production Data w PD Rev 4.1 April 2004 2 TABLE OF CONTENTS DESCRIPTION .......................................................................................................1 FEATURES.............................................................................................................1 APPLICATIONS .....................................................................................................1 BLOCK DIAGRAM .................................................................................................1 TABLE OF CONTENTS .........................................................................................2 PIN CONFIGURATION...........................................................................................4 ORDERING INFORMATION ..................................................................................4 PIN DESCRIPTION ................................................................................................5 ABSOLUTE MAXIMUM RATINGS .........................................................................6 RECOMMENDED OPERATING CONDITIONS .....................................................6 ELECTRICAL CHARACTERISTICS ......................................................................7 AUDIO OUTPUTS.......................................................................................................... 7 AUDIO INPUTS.............................................................................................................. 8 AUXILIARY MONO DAC (AUXDAC).............................................................................. 8 COMPARATORS ........................................................................................................... 8 REFERENCE VOLTAGES ............................................................................................. 9 DIGITAL INTERFACE CHARACTERISTICS.................................................................. 9 HEADPHONE / SPEAKER OUTPUT THD VERSUS POWER ..................................... 10 POWER CONSUMPTION............................................................................................ 11 DEVICE DESCRIPTION .......................................................................................12 INTRODUCTION.......................................................................................................... 12 AUDIO PATHS OVERVIEW......................................................................................... 13 AUDIO INPUTS ....................................................................................................14 LINE INPUT ................................................................................................................. 14 MICROPHONE INPUT ................................................................................................. 14 PHONE INPUT............................................................................................................. 16 PCBEEP INPUT ........................................................................................................... 17 AUDIO ADC..........................................................................................................18 RECORD SELECTOR ................................................................................................. 19 RECORD GAIN............................................................................................................ 20 AUTOMATIC LEVEL CONTROL.................................................................................. 21 AUDIO DACS .......................................................................................................24 STEREO DAC.............................................................................................................. 24 AUXILIARY DAC .......................................................................................................... 27 ANALOGUE AUDIO OUTPUTS ...........................................................................28 HEADPHONE OUTPUTS – HPOUTL AND HPOUTR .................................................. 28 EAR SPEAKER OUTPUT – OUT3 ............................................................................... 29 LOUDSPEAKER OUTPUTS – LOUT2 AND ROUT2.................................................... 30 PHONE OUTPUT (MONOOUT)................................................................................... 31 THERMAL CUTOUT .................................................................................................... 31 JACK INSERTION AND AUTO-SWITCHING............................................................... 32 DIGITAL AUDIO (SPDIF) OUTPUT ............................................................................. 33 AUDIO MIXERS ........................................................................................................... 34 VARIABLE RATE AUDIO / SAMPLE RATE CONVERSION ...............................36 BATTERY ALARM ...............................................................................................37 PRINCIPLE OF OPERATION ...................................................................................... 37 GPIO AND INTERRUPT CONTROL ....................................................................40 POWER MANAGEMENT .....................................................................................43 |
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