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13.3.2 Timer Modes ................................................................................................... 1076
13.3.3 Wait-for-Trigger Mode ........................................................................................ 1083
13.3.4 Synchronizing GP Timer Blocks............................................................................. 1083
13.3.5 Accessing Concatenated 16- and 32-Bit GPTM Register Values ...................................... 1084
13.4 Initialization and Configuration......................................................................................... 1084
13.4.1 One-Shot and Periodic Timer Modes....................................................................... 1084
13.4.2 Input Edge-Count Mode ...................................................................................... 1085
13.4.3 Input Edge-Timing Mode ..................................................................................... 1085
13.4.4 PWM Mode..................................................................................................... 1086
13.4.5 Producing DMA Trigger ...................................................................................... 1086
13.5 General-Purpose Timer Registers .................................................................................... 1086
13.5.1 GPT Registers ................................................................................................. 1087
14 Real-Time Clock.............................................................................................................. 1124
14.1 Introduction............................................................................................................... 1125
14.2 Functional Specifications............................................................................................... 1125
14.2.1 Functional Overview .......................................................................................... 1125
14.2.2 Free-Running Counter........................................................................................ 1125
14.2.3 Channels ....................................................................................................... 1125
14.2.4 Events .......................................................................................................... 1126
14.3 RTC Registers ........................................................................................................... 1126
14.3.1 Register Access ............................................................................................... 1126
14.3.2 Entering and Wakeup From Sleep ......................................................................... 1127
14.3.3 [AON_RTC:SYNC] Register ................................................................................. 1127
14.4 Real-Time Clock Registers............................................................................................. 1127
14.4.1 AON_RTC Registers.......................................................................................... 1128
15 Watchdog Timer.............................................................................................................. 1142
15.1 WDT Introduction........................................................................................................ 1143
15.2 WDT Functional Description ........................................................................................... 1143
15.3 WDT Initialization and Configuration.................................................................................. 1144
15.4 Watchdog Timer Registers............................................................................................. 1144
15.4.1 WDT Registers ................................................................................................ 1145
16 Random Number Generator.............................................................................................. 1155
16.1 Overview.................................................................................................................. 1156
16.2 Block Diagram ........................................................................................................... 1156
16.3 TRNG Software Reset.................................................................................................. 1157
16.4 Interrupt Requests....................................................................................................... 1157
16.5 TRNG Operation Description .......................................................................................... 1158
16.5.1 TRNG Shutdown .............................................................................................. 1158
16.5.2 TRNG Alarms.................................................................................................. 1159
16.5.3 TRNG Entropy ................................................................................................. 1159
16.6 TRNG Low-level Programing Guide .................................................................................. 1160
16.6.1 Initialization..................................................................................................... 1160
16.7 Random Number Generator ........................................................................................... 1162
16.7.1 TRNG Registers............................................................................................... 1163
17 AUX – Sensor Controller with Digital and Analog Peripherals .............................................. 1186
17.1 Introduction............................................................................................................... 1187
17.1.1 AUX Hardware Overview..................................................................................... 1188
17.2 Memory Mapping........................................................................................................ 1189
17.2.1 Alias of Commonly Used Registers......................................................................... 1189
17.3 IO Mapping............................................................................................................... 1191
17.4 Modules................................................................................................................... 1191
17.4.1 Sensor Controller.............................................................................................. 1191
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Contents SWCU117A–February 2015–Revised March 2015
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