WM8326
Production Data
17.1
17.2
17.3
GENERAL DESCRIPTION............................................................................... 97
POWER PATH MANAGEMENT INTERRUPTS............................................... 97
BACKUP POWER ............................................................................................ 97
18 AUXILIARY ADC......................................................................................... 98
18.1
18.2
18.3
18.4
18.5
GENERAL DESCRIPTION............................................................................... 98
AUXADC CONTROL ........................................................................................ 98
AUXADC READBACK...................................................................................... 99
DIGITAL COMPARATORS............................................................................. 101
AUXADC INTERRUPTS................................................................................. 103
19 RESERVED............................................................................................... 104
20 REAL-TIME CLOCK (RTC)....................................................................... 105
20.1
20.2
20.3
20.4
20.5
GENERAL DESCRIPTION............................................................................. 105
RTC CONTROL.............................................................................................. 105
RTC INTERRUPTS ........................................................................................ 107
DIGITAL RIGHTS MANAGEMENT ................................................................ 108
BACKUP MODE CLOCKING OPTIONS ........................................................ 108
21 GENERAL PURPOSE INPUTS / OUTPUTS (GPIO) ................................ 109
21.1
21.2
21.3
21.4
GENERAL DESCRIPTION............................................................................. 109
GPIO FUNCTIONS......................................................................................... 109
CONFIGURING GPIO PINS........................................................................... 111
GPIO INTERRUPTS....................................................................................... 115
22 SYSTEM STATUS LED DRIVERS............................................................ 116
22.1
22.2
GENERAL DESCRIPTION............................................................................. 116
LED DRIVER CONTROL................................................................................ 116
22.2.1
22.2.2
22.2.3
OTP PROGAM STATUS....................................................................................................116
POWER STATE STATUS..................................................................................................117
MANUAL MODE.................................................................................................................117
22.3
LED DRIVER CONNECTIONS....................................................................... 119
23 INTERRUPT CONTROLLER .................................................................... 120
23.1
23.2
PRIMARY INTERRUPTS ............................................................................... 121
SECONDARY INTERRUPTS......................................................................... 123
23.2.1
23.2.2
POWER STATE INTERRUPT............................................................................................123
THERMAL INTERRUPTS ..................................................................................................123
GPIO INTERRUPTS ..........................................................................................................124
ON PIN INTERRUPTS.......................................................................................................124
WATCHDOG INTERRUPTS..............................................................................................125
AUXADC INTERRUPTS ....................................................................................................125
POWER PATH MANAGEMENT INTERRUPTS.................................................................126
REAL TIME CLOCK AND CRYSTAL OSCILLATOR INTERRUPTS .................................126
OTP MEMORY INTERRUPTS...........................................................................................127
23.2.3
23.2.4
23.2.5
23.2.6
23.2.7
23.2.8
23.2.9
23.2.10 HIGH CURRENT INTERRUPTS........................................................................................127
23.2.11 UNDERVOLTAGE INTERRUPTS......................................................................................128
24 RESETS AND SUPPLY VOLTAGE MONITORING.................................. 129
24.1
24.2
24.3
24.4
RESETS ......................................................................................................... 129
HARDWARE RESET...................................................................................... 131
SOFTWARE RESET ...................................................................................... 131
SUPPLY VOLTAGE MONITORING ............................................................... 133
25 WATCHDOG TIMER ................................................................................. 135
26 TEMPERATURE SENSING ...................................................................... 137
27 VOLTAGE AND CURRENT REFERENCES............................................. 138
27.1
27.2
VOLTAGE REFERENCE (VREF)................................................................... 138
CURRENT REFERENCE (IREF) ................................................................... 138
PD, June 2012, Rev 4.0
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