WM9712LGEFLSLASHV datasheet(3/77 Pages) WOLFSON

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Production Data

WM9712L

PD Rev 4.5 August 2006

PRINCIPLE OF OPERATION - FIVE-WIRE TOUCHPANEL........................................ 40

CONTROLLING THE TOUCHPANEL DIGITISER ....................................................... 42

AUXILIARY ADC INPUTS ....................................................................................47

BATTERY MEASUREMENT USING THE BMON/AUX3 PIN ....................................... 47

BATTERY ALARM AND ANALOGUE COMPARATORS ....................................48

GPIO AND INTERRUPT CONTROL ....................................................................51

AC97 DATA AND CONTROL INTERFACE .........................................................58

INTERFACE PROTOCOL............................................................................................ 58

INTERFACE TIMING ................................................................................................... 59

APPLICATIONS INFORMATION .........................................................................71

RECOMMENDED EXTERNAL COMPONENTS........................................................... 71

RECOMMENDED COMPONENTS VALUES ............................................................... 72

LINE OUTPUT ............................................................................................................. 72

AC-COUPLED HEADPHONE OUTPUT....................................................................... 73

DC COUPLED (CAPLESS) HEADPHONE OUTPUT ................................................... 73

BTL LOUDSPEAKER OUTPUT ................................................................................... 74

COMBINED HEADSET / BTL EAR SPEAKER............................................................. 74

COMBINED HEADSET / SINGLE-ENDED EAR SPEAKER......................................... 74

JACK INSERT DETECTION ........................................................................................ 75

HOOKSWITCH DETECTION....................................................................................... 75

PACKAGE DRAWING..........................................................................................76

IMPORTANT NOTICE ..........................................................................................77

ADDRESS:................................................................................................................... 77

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