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WM8311 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc |
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WM8311 Datasheet(HTML) 6 Page - Wolfson Microelectronics plc |
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6 / 302 page  WM8311 Pre-Production w PP, May 2012, Rev 3.1 6 15.13 POWER MANAGEMENT INTERRUPTS ......................................................... 92 15.14 POWER GOOD INDICATION .......................................................................... 93 15.15 DC-DC CONVERTER OPERATION ................................................................ 94 15.15.1 OVERVIEW..........................................................................................................................94 15.15.2 DC-DC SYNCHRONOUS BUCK CONVERTERS................................................................95 15.15.3 DC-DC STEP UP CONVERTER ..........................................................................................98 15.16 LDO REGULATOR OPERATION..................................................................... 99 15.16.1 OVERVIEW..........................................................................................................................99 15.16.2 LDO REGULATORS ............................................................................................................99 16 CURRENT SINKS ..................................................................................... 101 16.1 GENERAL DESCRIPTION ............................................................................. 101 16.2 CURRENT SINK CONTROL .......................................................................... 101 16.2.1 ENABLING THE SINK CURRENT .....................................................................................101 16.2.2 PROGRAMMING THE SINK CURRENT ...........................................................................102 16.2.3 ON/OFF RAMP TIMING.....................................................................................................103 16.3 CURRENT SINK INTERRUPTS..................................................................... 104 16.4 LED DRIVER CONNECTIONS....................................................................... 105 17 POWER SUPPLY CONTROL ................................................................... 106 17.1 GENERAL DESCRIPTION ............................................................................. 106 17.2 BATTERY POWERED OPERATION ............................................................. 108 17.3 WALL ADAPTOR POWERED OPERATION.................................................. 108 17.4 USB POWERED OPERATION....................................................................... 109 17.5 POWER PATH MANAGEMENT INTERRUPTS ............................................. 110 17.6 BACKUP POWER .......................................................................................... 111 17.7 BATTERY CHARGER .................................................................................... 111 17.7.1 GENERAL DESCRIPTION.................................................................................................111 17.7.2 BATTERY CHARGER ENABLE.........................................................................................113 17.7.3 FAST CHARGING..............................................................................................................115 17.7.4 CHARGER TIMEOUT AND TERMINATION ......................................................................116 17.7.5 BATTERY CHARGE CURRENT MONITORING................................................................117 17.7.6 BATTERY FAULT / OVERVOLTAGE CONDITIONS.........................................................118 17.7.7 BATTERY TEMPERATURE MONITORING ......................................................................119 17.7.8 BATTERY CHARGER INTERRUPTS ................................................................................120 17.7.9 BATTERY CHARGER STATUS.........................................................................................121 18 AUXILIARY ADC....................................................................................... 122 18.1 GENERAL DESCRIPTION ............................................................................. 122 18.2 AUXADC CONTROL ...................................................................................... 122 18.3 AUXADC READBACK .................................................................................... 124 18.4 DIGITAL COMPARATORS............................................................................. 125 18.5 AUXADC INTERRUPTS................................................................................. 128 19 TOUCH PANEL CONTROLLER ............................................................... 129 19.1 GENERAL DESCRIPTION ............................................................................. 129 19.2 TOUCH PANEL CONFIGURATION ............................................................... 129 19.3 TOUCH PANEL CONTROL............................................................................ 130 19.4 TOUCH PANEL READBACK ......................................................................... 132 19.5 TOUCH PANEL INTERRUPTS ...................................................................... 133 19.6 TOUCH PANEL OPERATING PRINCIPLES.................................................. 133 19.6.1 4-WIRE TOUCH PANEL OPERATION ..............................................................................133 19.6.2 5-WIRE TOUCH PANEL OPERATION ..............................................................................135 20 REAL-TIME CLOCK (RTC)....................................................................... 137 20.1 GENERAL DESCRIPTION ............................................................................. 137 20.2 RTC CONTROL.............................................................................................. 137 20.3 RTC INTERRUPTS ........................................................................................ 139 |
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