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WM9712L Datasheet(PDF) 3 Page - Wolfson Microelectronics plc

Part No. WM9712L
Description  AC97 Audio and Touchpanel CODEC
Download  77 Pages
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Maker  WOLFSON [Wolfson Microelectronics plc]
Homepage  http://www.wolfsonmicro.com
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WM9712L Datasheet(HTML) 3 Page - Wolfson Microelectronics plc

 
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Production Data
WM9712L
w
PD Rev 4.5 August 2006
3
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
REGISTER MAP...................................................................................................62
REGISTER BITS BY ADDRESS .................................................................................. 63
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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