Preliminary
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2.1.3 On-Chip Flash API .............................................................................................. 191
2.1.4 CPU Vector Table ............................................................................................... 191
2.2 Bootloader Features ..................................................................................................... 194
2.2.1 Bootloader Functional Operation .............................................................................. 194
2.2.2 Bootloader Device Configuration .............................................................................. 195
2.2.3 PLL Multiplier and DIVSEL Selection ........................................................................ 196
2.2.4 Watchdog Module ............................................................................................... 196
2.2.5 Taking an ITRAP Interrupt ..................................................................................... 196
2.2.6 Internal Pullup Resisters ....................................................................................... 197
2.2.7 PIE Configuration ............................................................................................... 197
2.2.8 Reserved Memory .............................................................................................. 197
2.2.9 Bootloader Modes ............................................................................................... 198
2.2.10 Device_Cal ...................................................................................................... 204
2.2.11 Bootloader Data Stream Structure .......................................................................... 204
2.2.12 Basic Transfer Procedure ..................................................................................... 209
2.2.13 InitBoot Assembly Routine .................................................................................... 210
2.2.14 SelectBootMode Function .................................................................................... 211
2.2.15 CopyData Function ............................................................................................ 214
2.2.16 SCI_Boot Function ............................................................................................. 214
2.2.17 Parallel_Boot Function (GPIO) ............................................................................... 216
2.2.18 SPI_Boot Function ............................................................................................. 221
2.2.19 I2C Boot Function .............................................................................................. 224
2.2.20 eCAN Boot Function ........................................................................................... 227
2.2.21 ExitBoot Assembly Routine .................................................................................. 229
2.3 Building the Boot Table ................................................................................................. 230
2.3.1 The C2000 Hex Utility .......................................................................................... 230
2.3.2 Example: Preparing a COFF File For eCAN Bootloading ................................................. 231
2.4 Bootloader Code Overview ............................................................................................. 235
2.4.1 Boot ROM Version and Checksum Information ............................................................. 235
3 Enhanced Pulse Width Modulator (ePWM) Module ............................................................... 237
3.1 Introduction ............................................................................................................... 238
3.1.1 Submodule Overview ........................................................................................... 238
3.1.2 Register Mapping ............................................................................................... 241
3.2 ePWM Submodules ...................................................................................................... 244
3.2.1 Overview ......................................................................................................... 244
3.2.2 Time-Base (TB) Submodule ................................................................................... 246
3.2.3 Counter-Compare (CC) Submodule .......................................................................... 257
3.2.4 Action-Qualifier (AQ) Submodule ............................................................................. 263
3.2.5 Dead-Band Generator (DB) Submodule ..................................................................... 278
3.2.6 PWM-Chopper (PC) Submodule .............................................................................. 283
3.2.7 Trip-Zone (TZ) Submodule .................................................................................... 287
3.2.8 Event-Trigger (ET) Submodule ................................................................................ 292
3.2.9 Digital Compare (DC) Submodule ............................................................................ 296
3.3 Applications to Power Topologies ..................................................................................... 303
3.3.1 Overview of Multiple Modules ................................................................................. 303
3.3.2 Key Configuration Capabilities ................................................................................ 303
3.3.3 Controlling Multiple Buck Converters With Independent Frequencies ................................... 304
3.3.4 Controlling Multiple Buck Converters With Same Frequencies ........................................... 308
3.3.5 Controlling Multiple Half H-Bridge (HHB) Converters ...................................................... 311
3.3.6 Controlling Dual 3-Phase Inverters for Motors (ACI and PMSM) ......................................... 313
3.3.7 Practical Applications Using Phase Control Between PWM Modules ................................... 317
3.3.8 Controlling a 3-Phase Interleaved DC/DC Converter ...................................................... 318
3.3.9 Controlling Zero Voltage Switched Full Bridge (ZVSFB) Converter ...................................... 322
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Contents SPRUH18C – April 2011–Revised December 2011
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