參數(shù)資料
型號: WM9712LSEFV
廠商: Wolfson Microelectronics
元件分類: Codec
英文描述: AC97 Audio and Touchpanel CODEC
中文描述: AC97音頻編解碼器和觸摸屏
文件頁數(shù): 3/78頁
文件大小: 689K
代理商: WM9712LSEFV
Production Data
VARIABLE RATE AUDIO / SAMPLE RATE CONVERSION...............................37
TOUCHPANEL INTERFACE................................................................................38
PRINCIPLE OF OPERATION - FOUR-WIRE TOUCHPANEL .....................................38
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
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 - QFN...............................................................................76
PACKAGE DRAWING – TQFP............................................................................77
IMPORTANT NOTICE..........................................................................................78
ADDRESS:...................................................................................................................78
WM9712L
w
PD Rev 4.0 December 2003
3
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