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WM8310 Datasheet(PDF) 6 Page - Cirrus Logic |
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WM8310 Datasheet(HTML) 6 Page - Cirrus Logic |
6 / 291 page WM8310 Pre-Production w PP, May 2012, Rev 3.1 6 15.14 POWER GOOD INDICATION .......................................................................... 91 15.15 DC-DC CONVERTER OPERATION ................................................................ 92 15.15.1 OVERVIEW..........................................................................................................................92 15.15.2 DC-DC SYNCHRONOUS BUCK CONVERTERS................................................................93 15.15.3 DC-DC STEP UP CONVERTER ..........................................................................................96 15.16 LDO REGULATOR OPERATION..................................................................... 97 15.16.1 OVERVIEW..........................................................................................................................97 15.16.2 LDO REGULATORS ............................................................................................................97 16 CURRENT SINKS ....................................................................................... 99 16.1 GENERAL DESCRIPTION ............................................................................... 99 16.2 CURRENT SINK CONTROL ............................................................................ 99 16.2.1 ENABLING THE SINK CURRENT .......................................................................................99 16.2.2 PROGRAMMING THE SINK CURRENT ...........................................................................100 16.2.3 ON/OFF RAMP TIMING.....................................................................................................101 16.3 CURRENT SINK INTERRUPTS..................................................................... 102 16.4 LED DRIVER CONNECTIONS....................................................................... 103 17 POWER SUPPLY CONTROL ................................................................... 104 17.1 GENERAL DESCRIPTION ............................................................................. 104 17.2 BATTERY POWERED OPERATION ............................................................. 106 17.3 WALL ADAPTOR POWERED OPERATION.................................................. 106 17.4 USB POWERED OPERATION....................................................................... 107 17.5 POWER PATH MANAGEMENT INTERRUPTS ............................................. 108 17.6 BACKUP POWER .......................................................................................... 109 17.7 BATTERY CHARGER .................................................................................... 109 17.7.1 GENERAL DESCRIPTION.................................................................................................109 17.7.2 BATTERY CHARGER ENABLE.........................................................................................111 17.7.3 FAST CHARGING..............................................................................................................112 17.7.4 CHARGER TIMEOUT AND TERMINATION ......................................................................113 17.7.5 BATTERY CHARGE CURRENT MONITORING................................................................115 17.7.6 BATTERY FAULT / OVERVOLTAGE CONDITIONS.........................................................116 17.7.7 BATTERY TEMPERATURE MONITORING ......................................................................116 17.7.8 BATTERY CHARGER INTERRUPTS ................................................................................118 17.7.9 BATTERY CHARGER STATUS.........................................................................................119 18 AUXILIARY ADC....................................................................................... 120 18.1 GENERAL DESCRIPTION ............................................................................. 120 18.2 AUXADC CONTROL ...................................................................................... 120 18.3 AUXADC READBACK .................................................................................... 122 18.4 DIGITAL COMPARATORS............................................................................. 123 18.5 AUXADC INTERRUPTS................................................................................. 125 19 RESERVED ............................................................................................... 125 20 REAL-TIME CLOCK (RTC)....................................................................... 126 20.1 GENERAL DESCRIPTION ............................................................................. 126 20.2 RTC CONTROL.............................................................................................. 126 20.3 RTC INTERRUPTS ........................................................................................ 128 20.4 DIGITAL RIGHTS MANAGEMENT ................................................................ 129 20.5 BACKUP MODE CLOCKING OPTIONS ........................................................ 129 21 GENERAL PURPOSE INPUTS / OUTPUTS (GPIO) ................................ 130 21.1 GENERAL DESCRIPTION ............................................................................. 130 21.2 GPIO FUNCTIONS......................................................................................... 130 21.3 CONFIGURING GPIO PINS........................................................................... 132 21.4 GPIO INTERRUPTS....................................................................................... 136 22 SYSTEM STATUS LED DRIVERS............................................................ 137 |
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