WM9713 datasheet(3/111 Pages) WOLFSON

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Preliminary Technical Data

WM9713L

PTD, March 2004, Rev 2.2

AUDIO MIXERS....................................................................................................48

MIXER OVERVIEW ..................................................................................................... 48

HEADPHONE MIXERS ................................................................................................ 48

SPEAKER MIXER ........................................................................................................ 48

MONO MIXER.............................................................................................................. 49

MIXER OUTPUT INVERTERS..................................................................................... 49

ANALOGUE AUDIO OUTPUTS ...........................................................................50

HEADPHONE OUTPUTS – HPL AND HPR................................................................. 50

MONO OUTPUT .......................................................................................................... 51

SPEAKER OUTPUTS – SPKL AND SPKR .................................................................. 52

AUXILLARY OUTPUTS – OUT3 AND OUT4 ............................................................... 53

THERMAL SENSOR .................................................................................................... 54

JACK INSERTION AND AUTO-SWITCHING............................................................... 54

DIGITAL AUDIO (SPDIF) OUTPUT......................................................................58

TOUCHPANEL INTERFACE................................................................................59

PRINCIPLE OF OPERATION - FIVE-WIRE TOUCHPANEL........................................ 61

CONTROLLING THE TOUCHPANEL DIGITISER ....................................................... 63

ADDITIONAL FEATURES....................................................................................73

AUXILIARY ADC INPUTS............................................................................................ 73

BATTERY ALARM AND ANALOGUE COMPARATORS.............................................. 74

GPIO AND INTERRUPT CONTROL............................................................................ 77

POWER MANAGEMENT .....................................................................................82

INTRODUCTION.......................................................................................................... 82

AC97 CONTROL REGISTER....................................................................................... 82

EXTENDED POWERDOWN REGISTERS .................................................................. 82

ADDITIONAL POWER MANAGEMENT....................................................................... 83

POWER ON RESET (POR) ......................................................................................... 84

AC97 INTERFACE TIMING.......................................................................................... 84

APPLICATIONS INFORMATION .......................................................................103

RECOMMENDED EXTERNAL COMPONENTS......................................................... 103

LINE OUTPUT ........................................................................................................... 103

AC-COUPLED HEADPHONE OUTPUT..................................................................... 104

DC COUPLED (CAPLESS) HEADPHONE OUTPUT ................................................. 104

BTL LOUDSPEAKER OUTPUT ................................................................................. 105

COMBINED HEADSET / BTL EAR SPEAKER........................................................... 105

COMBINED HEADSET / SINGLE-ENDED EAR SPEAKER....................................... 106

JACK INSERT DETECTION ...................................................................................... 106

HOOKSWITCH DETECTION..................................................................................... 106

TYPICAL OUTPUT CONFIGURATIONS ................................................................... 107

PACKAGE DIMENSIONS ..................................................................................111

IMPORTANT NOTICE ........................................................................................112

ADDRESS:................................................................................................................. 112

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