User Manual

Table of Contents
TriFlash with SD Interface Product Manual (Preliminary), Rev. 1.2 © 2002/2003 SANDISK CORPORATION
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5. SPI Protocol Definition ...................................................................................................................................... 5-1
5.1. SPI Bus Protocol ............................................................................................................................... 5-1
5.1.1. Mode Selection ....................................................................................................................... 5-1
5.1.2. Bus Transfer Protection .......................................................................................................... 5-2
5.1.3. Data Read................................................................................................................................ 5-2
5.1.4. Data Write............................................................................................................................... 5-3
5.1.5. Erase and Write Protect Management..................................................................................... 5-4
5.1.6. Read CID/CSD Registers........................................................................................................ 5-5
5.1.7. Reset Sequence ....................................................................................................................... 5-5
5.1.8. Clock Control.......................................................................................................................... 5-5
5.1.9. Error Conditions...................................................................................................................... 5-6
5.1.9.1. CRC and Illegal Commands .................................................................................. 5-6
5.1.9.2. Read, Write and Erase Time-out Conditions ......................................................... 5-6
5.1.10. Memory Array Partitioning................................................................................................... 5-6
5.1.11. Card Lock/Unlock................................................................................................................. 5-7
5.1.12. Application Specific Commands...........................................................................................5-7
5.1.13. Copyright Protection Commands.......................................................................................... 5-7
5.2. SPI Command Set ............................................................................................................................. 5-7
5.2.1. Command Format.................................................................................................................... 5-7
5.2.2. Command Classes ................................................................................................................... 5-7
5.2.2.1. Detailed Command Description............................................................................. 5-8
5.2.3. Responses................................................................................................................................ 5-12
5.2.3.1. Format R1 ..............................................................................................................5-12
5.2.3.2. Format R1b ............................................................................................................ 5-12
5.2.3.3. Format R2 ..............................................................................................................5-12
5.2.3.4. Format R3 ..............................................................................................................5-13
5.2.3.5. Data Response ....................................................................................................... 5-14
5.2.4. Data Tokens ............................................................................................................................ 5-14
5.2.5. Data Error Token .................................................................................................................... 5-15
5.2.6. Clearing Status Bits................................................................................................................. 5-15
5.3. Card Registers ................................................................................................................................... 5-15
5.4. SPI Bus Timing Diagrams................................................................................................................. 5-15
5.4.1. Command/Response................................................................................................................ 5-16
5.4.2. Data Read................................................................................................................................ 5-17
5.4.3. Data Write............................................................................................................................... 5-17
5.4.4. Timing Values......................................................................................................................... 5-18
5.5. SPI Electrical Interface...................................................................................................................... 5-18
5.6. SPI Bus Operating Conditions .......................................................................................................... 5-19
5.7. Bus Timing........................................................................................................................................ 5-19
Appendix A. Ordering Information........................................................................................................................ A-1
Appendix B. Technical Support Services............................................................................................................... B-1
Appendix C. SanDisk Worldwide Sales Offices .................................................................................................... C-1
Appendix D. Limited Warranty.............................................................................................................................. D-1