Preliminary Technical Data
WM9713L
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
REGISTER MAP...................................................................................................89
REGISTER BITS BY ADDRESS .................................................................................. 90
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
1
PTD, March 2004, Rev 2.2
3
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
