WM9711L Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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WM9711L

Low Power Audio CODEC for Portable Applications

Wolfson Microelectronics plc 

WM9711L

TABLE OF CONTENTS

Production Data

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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PD Rev 4.1 April 2004

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