SD Specifications Part 1 Physical Layer Simplified Specification Version 2 00 September 25 2006 SD Group Matsushita Electric Industrial Co Ltd Panasonic SanDisk Corporation Toshiba Corporation Technical Committee SD Card Association Copyright 2001 2006 SD Group Panasonic SanDisk Toshiba and SD Card Association Physical Layer Simplified Specification Version 2 00 Revision History Date April 3 2006 September 25 2006 Version 1 10 2 00 Changes compared to previous issue Physical Layer Simplified Specification Version 1 10 initial release Supplementary Notes Ver1 00 is applied Physical Layer Simplified Specification Version 2 00 i Copyright 2001 2006 SD Group Panasonic SanDisk Toshiba and SD Card Association Physical Layer Simplified Specification Version 2 00 Conditions for publication Publisher SD Card Association 2400 Camino Ramon Suite 375 San Ramon CA 94583 USA Telephone 1 925 275 6615 Fax 1 925 886 4870 E mail office sdcard org Copyright Holders The SD Group Matsushita Electric Industrial Co Ltd Panasonic SanDisk Corporation SanDisk Toshiba Corporation Toshiba The SD Card Association Notes The copyright of the previous versions Version 1 00 and 1 01 and all corrections or non material changes thereto are owned by SD Group The copyright of material changes to the previous versions Version 1 01 are owned by SD Card Association Disclaimers The information contained herein is presented only as a standard specification for SD Card and SD Host Ancillary products No responsibility is assumed by SD Card Association for any damages any infringements of patents or other right of the third parties which may result from its use No license is granted by implication or otherwise under any patent or rights of SD Group and SD Card Association or others ii Copyright 2001 2006 SD Group Panasonic SanDisk Toshiba and SD Card Association Physical Layer Simplified Specification Version 2 00 Conventions Used in This Document Naming Conventions Some terms are capitalized to distinguish their definition from their common English meaning Words not capitalized have their common English meaning Numbers and Number Bases Hexadecimal numbers are written with a lower case h suffix e g FFFFh and 80h Binary numbers are written with a lower case b suffix e g 10b Binary numbers larger than four digits are written with a space dividing each group of four digits as in 1000 0101 0010b All other numbers are decimal Key Words May Shall Indicates flexibility of choice with no implied recommendation or requirement Indicates a mandatory requirement Designers shall implement such mandatory requirements to ensure interchangeability and to claim conformance with the specification Should Indicates a strong recommendation but not a mandatory requirement Designers should give strong consideration to such recommendations but there is still a choice in implementation Application Notes Some sections of this document provide guidance to the host implementers as follows Application Note This is an example of an application note iii Copyright 2001 2006 SD Group Panasonic SanDisk Toshiba and SD Card Association Physical Layer Simplified Specification Version 2 00 Table of Contents 1 General Description 1 2 System Features 3 3 SD Memory Card System Concept 5 3 1 Read Write Property 5 3 2 Supply Voltage 5 3 3 Card Capacity 5 3 4 Speed Class 6 3 5 Bus Topology 7 3 6 Bus Protocol 7 3 6 1 SD Bus 7 3 6 2 SPI Bus 10 3 7 SD Memory Card Pins and Registers 11 4 SD Memory Card Functional Description 12 4 1 General 12 4 2 Card Identification Mode 13 4 2 1 Card Reset 13 4 2 2 Operating Condition Validation 13 4 2 3 Card Initialization and Identification Process 15 4 3 Data Transfer Mode 17 4 3 1 Wide Bus Selection Deselection 19 4 3 2 2 GByte Card 19 4 3 3 Data Read 19 4 3 4 Data Write 20 4 3 5 Erase 22 4 3 6 Write Protect Management 22 4 3 7 Card Lock Unlock Operation 23 4 3 7 1 General 23 4 3 7 2 Parameter and the Result of CMD42 25 4 3 7 3 Forcing Erase 27 4 3 7 3 1 Force Erase Function to the Locked Card 27 4 3 7 4 Relation Between ACMD6 and Lock Unlock State 28 4 3 7 5 Commands Accepted for Locked Card 28 4 3 7 6 Two Types of Lock Unlock Card 29 4 3 8 Content Protection 29 4 3 9 Application Specific Commands 29 4 3 9 1 Application Specific Command APP CMD CMD55 29 4 3 9 2 General Command GEN CMD CMD56 30 4 3 10 Switch Function Command 31 4 3 10 1 General 31 4 3 10 2 Mode 0 Operation Check Function 32 4 3 10 3 Mode 1 Operation Set Function 33 4 3 10 4 Switch Function Status 35 4 3 10 4 1 Busy Status Indication for Functions 36 4 3 10 4 2 Data Structure Version 37 iv Copyright 2001 2006 SD Group Panasonic SanDisk Toshiba and SD Card Association Physical Layer Simplified Specification Version 2 00 4 3 10 4 3 Function Table of Switch Command 37 4 3 10 5 Relationship between CMD6 data other commands 38 4 3 10 6 Switch Function Flow Example 38 4 3 10 7 Example of Checking 38 4 3 11 High Speed Mode 25 MB sec interface speed 39 4 3 12 Command System 39 4 3 13 Send Interface Condition Command CMD8 40 4 3 14 Command Functional Difference in High Capacity SD Memory Card 41 4 4 Clock Control 42 4 5 Cyclic Redundancy Code CRC 43 4 6 Error Conditions 45 4 6 1 CRC and Illegal Command 45 4 6 2 Read Write and Erase Timeout Conditions 45 4 6 2 1 Read 45 4 6 2 2 Write 45 4 6 2 3 Erase 45 4 7 Commands 46 4 7 1 Command Types 46 4 7 2 Command Format 46 4 7 3 Command Classes 46 4 7 4 Detailed Command Description 49 4 8 Card State Transition Table 56 4 9 Responses 58 4 9 1 R1 normal response command 58 4 9 2 R1b 58 4 9 3 R2 CID CSD register 58 4 9 4 R3 OCR register 59 4 9 5 R6 Published RCA response 59 4 9 6 R7 Card interface condition 59 4 10 Two Status Information of SD Memory Card 61 4 10 1 Card Status 61 4 10 2 SD Status 65 4 11 Memory Array Partitioning 68 4 12 Timings 68 4 13 Speed Class Specification 69 4 13 1 Allocation Unit AU 69 4 13 2 Recording Unit RU 69 4 13 3 Write Performance 69 4 13 4 Read Performance 69 4 13 5 Performance Curve Definition 69 4 13 6 Speed Class Definition 69 4 13 7 Consideration for Inserting FAT Update during Recording 70 4 13 8 Measurement Conditions and Requirements of the Speed Class 70 4 14 Erase Timeout Calculation 71 4 14 1 Erase Unit 71 4 14 2 Case Analysis of Erase Time Characteristics 71 4 14 3 Method for Erase Large Areas 72 4 14 4 Calculation of Erase Timeout Value Using the Parameter Registers 72 5 Card …
View Full Document
Unlocking...