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上传时间: 2011-11-19
详细说明： 1 General Description 2 System Features 3 SD Memory Card System Concept 31 Read-Write Property 32 Supply Voltage 33 Card Capacity 34 Speed Class 35 Bus Topology 36 Bus Protocol 361 SD Bus 362 SPI Bus 37 SD Memory Card–Pins and Registers 4 SD Memory Card Functional Description 41 General 42 Card Identification Mode 421 Card Reset 422 Operating Condition Validation1 423 Card Initialization and Identification Process 43 Data Transfer Mode 431 Wide Bus Selection/Deselection 432 2 GByte Card 433 Data Read 434 Data Write 43 5 Erase 436 Write Protect Management 437 Card Lock/Unlock Operation 4371 General 4372 Parameter and the Result of CMD42 4373 Forcing Erase 43731 Force Erase Function to the Locked Card 4374 Relation Between ACMD6 and Lock/Unlock State 4375 Commands Accepted for Locked Card 4376 Two Types of Lock/Unlock Card 438 Content Protection 439 Application-Specific Commands 4391 Application-Specific Command – APP_CMD (CMD55) 4392 General Command - GEN_CMD (CMD56) 4310 Switch Function Command 43101 General 43102 Mode 0 Operation - Check Function 43103 Mode 1 Operation - Set Function 43104 Switch Function Status 431041 Busy Status Indication for Functions 431042 Data Structure Version 431043 Function Table of Switch Command 43105 Relationship between CMD6 data & other commands 43106 Switch Function Flow Example 43107 Example of Checking 4311 High-Speed Mode (25 MB/sec interface speed) 4312 Command System 4313 Send Interface Condition Command (CMD8) 4314 Command Functional Difference in High Capacity SD Memory Card 44 Clock Control 45 Cyclic Redundancy Code (CRC) 46 Error Conditions 461 CRC and Illegal Command 462 Read, Write and Erase Timeout Conditions 4621 Read 4622 Write 4623 Erase 47 Commands 471 Command Types 472 Command Format 473 Command Classes 474 Detailed Command Description 48 Card State Transition Table 49 Responses 491 R1 (normal response command): 492 R1b 493 R2 (CID, CSD register) 494 R3 (OCR register) 495 R6 (Published RCA response) 496 R7 (Card interface condition) 410 Two Status Information of SD Memory Card 4101 Card Status 4102 SD Status 411 Memory Array Partitioning 412 Timings 413 Speed Class Specification 4131 Allocation Unit (AU) 4132 Recording Unit (RU) 4133 Write Performance 4134 Read Performance 4135 Performance Curve Definition 4136 Speed Class Definition 4137 Consideration for Inserting FAT Update during Recording 4138 Measurement Conditions and Requirements of the Speed Class 414 Erase Timeout Calculation 4141 Erase Unit 4142 Case Analysis of Erase Time Characteristics 4143 Method for Erase Large Areas 4144 Calculation of Erase Timeout Value Using the Parameter Registers 5 Card Registers 51 OCR register 52 CID register 53 CSD Register 531 CSD_STRUCTURE 532 CSD Register (CSD Version 10) 533 CSD Register (CSD Version 20) 54 RCA register 55 DSR register (Optional) 56 SCR register 6 SD Memory Card Hardware Interface 61 Hot Insertion and Removal 62 Card Detection (Insertion/Removal) 63 Power Protection (Insertion/Removal) 64 Power Scheme 641 Power Up 642 Power Down and Power Cycle 65 Programmable Card Output Driver (Optional) 66 Bus Operating Conditions 67 Bus Timing (Default) 68 Bus Timing (High-Speed Mode) 7 SPI Mode 71 Introduction 72 SPI Bus Protocol 721 Mode Selection and Initialization 722 Bus Transfer Protection 723 Data Read 724 Data Write 725 Erase & Write Protect Management 726 Read CID/CSD Registers 727 Reset Sequenc 728 Error Conditions 729 Memory Array Partitioning 7210 Card Lock/Unlock 7211 Application Specific Commands 7212 Content Protection Command 7213 Switch Function Command 7214 High-Speed Mode 7215 Speed Class Specification 73 SPI Mode Transaction Packets 731 Command Tokens 7311 Command Format 7312 Command Classes 7313 Detailed Command Description 7314 Card Operation for CMD8 in SPI mode 732 Responses 7321 Format R1 7322 Format R1b 7323 Format R2 7324 Format R3 7325 Formats R4 & R5 7326 Format R7 733 Control Tokens 7331 Data Response Token 7332 Start Block Tokens and Stop Tran Token 7333 Data Error Token 734 Clearing Status Bits 74 Card Registers 75 SPI Bus Timing Diagrams 76 SPI Electrical Interface 77 SPI Bus Operating Conditions 78 Bus Timing 8 SD Memory Card Mechanical Specification Appendix A A1 Connector A2 Related Documentation Appendix B B1 Abbreviations and terms ...展开收缩
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