Maxim Integrated DS4830 Optical Microcontroller - Manual (Page 7)

DS4830 User’s Guide
7
22.2.1 – JTAG Bootloader Protocol ............................................................................................................................. 172
22.2.2 – I2C Bootloader Protocol ................................................................................................................................. 172
22.3 – Bootloader Commands ......................................................................................................................................... 173
22.3.1 - Command 00h – No Operation ....................................................................................................................... 173
22.3.2 - Command 01h – Exit Loader .......................................................................................................................... 173
22.3.3 - Command 02h – Master Erase ....................................................................................................................... 173
22.3.4 - Command 03h – Password Match ................................................................................................................. 174
22.3.5 - Command 04h – Get Status ........................................................................................................................... 174
22.3.6 - Command 05h – Get Supported Commands ................................................................................................. 175
22.3.7 - Command 06h – Get Code Size ..................................................................................................................... 175
22.3.8 - Command 07h – Get Data Size ...................................................................................................................... 175
22.3.9 - Command 08h – Get Loader Version ............................................................................................................. 175
22.3.10 - Command 09h – Get Utility ROM Version .................................................................................................... 175
22.3.11 - Command 10h – Load Code ........................................................................................................................ 176
22.3.12 - Command 11h – Load Data ......................................................................................................................... 176
22.3.13 - Command 20h – Dump Code ....................................................................................................................... 176
22.3.14 - Command 21h – Dump Data ........................................................................................................................ 177
22.3.15 - Command 30h – CRC Code ......................................................................................................................... 177
22.3.16 - Command 31h – CRC Data .......................................................................................................................... 177
22.3.17 - Command 40h – Verify Code ....................................................................................................................... 177
22.3.18 - Command 41h – Verify Data ........................................................................................................................ 177
22.3.19 - Command 50h – Load and Verify Code ....................................................................................................... 178
22.3.20 - Command 51h – Load and Verify Data ........................................................................................................ 178
22.3.21 - Command E0h – Code Page Erase ............................................................................................................. 178
SECTION 23 – PROGRAMMING ....................................................................................................................................... 179
23.1 – Addressing Modes ................................................................................................................................................ 179
23.2 – Prefixing Operations ............................................................................................................................................. 179
23.3 – Reading and Writing Registers ............................................................................................................................. 179
23.3.1 – Loading an 8-bit register with an immediate value ........................................................................................ 180
23.3.2 – Loading a 16-bit register with a 16-bit immediate value ................................................................................ 180
23.3.3 – Moving values between registers of the same size ....................................................................................... 180
23.3.4 – Moving values between registers of different sizes ....................................................................................... 180
23.4 – Reading and Writing Register Bits ....................................................................................................................... 181
23.5 – Using the Arithmetic and Logic Unit ..................................................................................................................... 182
23.5.1 – Selecting the active accumulator ................................................................................................................... 182
23.5.2 – Enabling auto-increment and auto-decrement .............................................................................................. 182
23.5.3 – ALU operations using the active accumulator and a source ......................................................................... 184
23.5.4 – ALU operations using only the active accumulator........................................................................................ 184
23.5.5 – ALU bit operations using only the active accumulator ................................................................................... 184
23.5.6 – Example: Adding two four-byte numbers using auto-increment .................................................................... 184
23.6 - Processor Status Flag Operations ........................................................................................................................ 184
23.6.1 - Sign Flag ......................................................................................................................................................... 184