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上传时间: 2009-08-08
详细说明： 1. Introduction to the SD Card ............................................................................................................................... 1-1 1.1. Scope......................................................................................... ....................................................... 1-2 1.2. Product Models ................................................................................................................................ 1-2 1.3. System Features................................................................................................................................ 1-2 1.4. SD Card Standard............................................................................................................................. 1-3 1.5. Functional Description ...................................................................................................................... 1-3 1.5.1. Flash Technology Independence............................................................................................. 1-4 1.5.2. Defect and Error Management ................................................................................................ 1-4 1.5.3. Copyright Protection ............................................................................................................... 1-4 1.5.4. Endurance ............................................................................................................................... 1-5 1.5.5. Wear Leveling........................................................................................................................ 1-5 1.5.6. Using the Erase Command...................................................................................................... 1-5 1.5.7. Automatic Sleep Mode............................................................................................................ 1-5 1.5.8. Hot Insertion ........................................................................................................................... 1-5 1.5.9. SD Card—SD Bus Mode ........................................................................................................ 1-6 1.5.9.1. SD Card Standard Compliance .............................................................................. 1-6 1.5.9.2. Negotiating Operation Conditions ......................................................................... 1-6 1.5.9.3. Card Acquisition and Identification....................................................................... 1-6 1.5.9.4. Card Status............................................................................................................. 1-6 1.5.9.5. Memory Array Partitioning.................................................................................... 1-7 1.5.9.6. Read and Write Operations.................................................................................... 1-9 1.5.9.7. Data Transfer Rate ................................................................................................. 1-9 1.5.9.8. Data Protection in the Flash Card .......................................................................... 1-10 1.5.9.9. Erase ...................................................................................................................... 1-10 1.5.9.10. Write Protection................................................................................................... 1-10 1.5.9.11. Copy Bit............................................................................................................... 1-10 1.5.9.12. The CSD Register ................................................................................................ 1-10 1.5.10. SD Card—SPI Mode............................................................................................................. 1-10 1.5.10.1. Negotiating Operating Conditions ....................................................................... 1-11 1.5.10.2. Card Acquisition and Identification..................................................................... 1-11 1.5.10.3. Card Status........................................................................................................... 1-11 1.5.10.4. Memory Array Partitioning.................................................................................. 1-11 1.5.10.5. Read and Write Operations.................................................................................. 1-11 1.5.10.6. Data Transfer Rate ............................................................................................... 1-11 1.5.10.7. Data Protection in the SD Card............................................................................ 1-11 1.5.10.8. Erase .................................................................................................................... 1-11 1.5.10.9. Write Protection................................................................................................... 1-12 1.5.10.10. Copyright Protection.......................................................................................... 1-12 ...展开收缩
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