Contents
1 Programming Via the Bootstrap Loader ................................................................................. 7
1.1 Supplementary Online Information ....................................................................................... 7
1.2 Introduction .................................................................................................................. 7
1.3 Standard RESET and BSL Entry Sequence ............................................................................ 8
1.3.1 MSP430 Devices With Shared JTAG Pins ..................................................................... 8
1.3.2 MSP430 Flash Devices With Dedicated JTAG Pins .......................................................... 9
1.3.3 Devices With USB ................................................................................................. 9
1.4 UART Protocol .............................................................................................................. 9
1.5 USB Protocol ................................................................................................................ 9
2 ROM-Based Bootstrap Loader Protocol ................................................................................ 11
2.1 Synchronization Sequence ............................................................................................... 11
2.2 Commands ................................................................................................................. 11
2.2.1 Unprotected Commands ......................................................................................... 11
2.2.2 Password Protected Commands ............................................................................... 11
2.3 Programming Flow ........................................................................................................ 12
2.4 Data Frame ................................................................................................................. 13
2.4.1 Data-Stream Structure ........................................................................................... 13
2.4.2 Checksum ......................................................................................................... 14
2.4.3 Example Sequence ............................................................................................... 14
2.4.4 Commands – Detailed Description ............................................................................. 14
2.5 Loadable BSL .............................................................................................................. 18
2.6 Exiting the BSL ............................................................................................................ 19
2.7 Password Protection ...................................................................................................... 19
2.8 Code Protection Fuse ..................................................................................................... 20
2.9 BSL Internal Settings and Resources .................................................................................. 20
2.9.1 Chip Identification and BSL Version ........................................................................... 20
2.9.2 Vectors to Call the BSL Externally ............................................................................. 20
2.9.3 Initialization Status ............................................................................................... 21
2.9.4 Memory Allocation and Resources ............................................................................. 22
3 Flash-Based Bootstrap Loader Protocol ............................................................................... 23
3.1 BSL Data Packet .......................................................................................................... 23
3.2 UART Peripheral Interface (PI) .......................................................................................... 23
3.2.1 Wrapper ............................................................................................................ 23
3.2.2 Abbreviations ...................................................................................................... 23
3.2.3 Messages .......................................................................................................... 24
3.2.4 Interface Specific Commands ................................................................................... 24
3.3 USB Peripheral Interface ................................................................................................. 24
3.3.1 Wrapper ............................................................................................................ 24
3.3.2 Hardware Requirements ......................................................................................... 25
3.4 BSL Core Command Structure .......................................................................................... 25
3.4.1 Abbreviations ...................................................................................................... 25
3.4.2 Command Descriptions .......................................................................................... 26
3.5 BSL Security ............................................................................................................... 27
3.5.1 Protected Commands ............................................................................................ 27
3.5.2 RAM Erase ........................................................................................................ 27
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SLAU319A–July 2010–Revised August 2010 Contents
Copyright © 2010, Texas Instruments Incorporated
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