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WM8310 Datasheet(PDF) 6 Page - Cirrus Logic

Part # WM8310
Description  Processor Power Management Subsystem
Download  291 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8310 Datasheet(HTML) 6 Page - Cirrus Logic

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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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