WM8325 datasheet(6/254 Pages) WOLFSON

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WM8325

Production Data

PD, February 2012, Rev 4.0

17.1

GENERAL DESCRIPTION ............................................................................... 97

17.2

POWER PATH MANAGEMENT INTERRUPTS ............................................... 97

17.3

BACKUP POWER ............................................................................................ 97

AUXILIARY ADC......................................................................................... 98

18.1

GENERAL DESCRIPTION ............................................................................... 98

18.2

AUXADC CONTROL ........................................................................................ 98

18.3

AUXADC READBACK ...................................................................................... 99

18.4

DIGITAL COMPARATORS............................................................................. 101

18.5

AUXADC INTERRUPTS................................................................................. 103

RESERVED ............................................................................................... 104

REAL-TIME CLOCK (RTC)....................................................................... 105

20.1

GENERAL DESCRIPTION ............................................................................. 105

20.2

RTC CONTROL.............................................................................................. 105

20.3

RTC INTERRUPTS ........................................................................................ 107

20.4

DIGITAL RIGHTS MANAGEMENT ................................................................ 108

20.5

BACKUP MODE CLOCKING OPTIONS ........................................................ 108

GENERAL PURPOSE INPUTS / OUTPUTS (GPIO) ................................ 109

21.1

GENERAL DESCRIPTION ............................................................................. 109

21.2

GPIO FUNCTIONS......................................................................................... 109

21.3

CONFIGURING GPIO PINS........................................................................... 111

21.4

GPIO INTERRUPTS....................................................................................... 115

SYSTEM STATUS LED DRIVERS............................................................ 116

22.1

GENERAL DESCRIPTION ............................................................................. 116

22.2

LED DRIVER CONTROL................................................................................ 116

22.2.1

OTP PROGAM STATUS....................................................................................................116

22.2.2

POWER STATE STATUS ..................................................................................................117

22.2.3

MANUAL MODE.................................................................................................................117

22.3

LED DRIVER CONNECTIONS....................................................................... 119

INTERRUPT CONTROLLER .................................................................... 120

23.1

PRIMARY INTERRUPTS ............................................................................... 121

23.2

SECONDARY INTERRUPTS ......................................................................... 123

23.2.1

POWER STATE INTERRUPT............................................................................................123

23.2.2

THERMAL INTERRUPTS ..................................................................................................123

23.2.3

GPIO INTERRUPTS ..........................................................................................................125

23.2.4

ON PIN INTERRUPTS .......................................................................................................125

23.2.5

WATCHDOG INTERRUPTS ..............................................................................................126

23.2.6

AUXADC INTERRUPTS ....................................................................................................126

23.2.7

POWER PATH MANAGEMENT INTERRUPTS.................................................................127

23.2.8

REAL TIME CLOCK AND CRYSTAL OSCILLATOR INTERRUPTS .................................127

23.2.9

OTP MEMORY INTERRUPTS...........................................................................................128

23.2.10

HIGH CURRENT INTERRUPTS........................................................................................128

23.2.11

UNDERVOLTAGE INTERRUPTS......................................................................................129

RESETS AND SUPPLY VOLTAGE MONITORING .................................. 130

24.1

RESETS ......................................................................................................... 130

24.2

HARDWARE RESET...................................................................................... 132

24.3

SOFTWARE RESET ...................................................................................... 132

24.4

SUPPLY VOLTAGE MONITORING ............................................................... 134

WATCHDOG TIMER ................................................................................. 136

TEMPERATURE SENSING ...................................................................... 138

VOLTAGE AND CURRENT REFERENCES ............................................. 139

27.1

VOLTAGE REFERENCE (VREF)................................................................... 139

27.2

CURRENT REFERENCE (IREF) ................................................................... 139

WM8325 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc

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