SD CARD协议

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【文件名】:08929@52RD_SD CARD协议.rar
【格　式】:rar
【大　小】:2904K
【简　介】:
【目　录】:1 General description - 6
2 System features - 8
3 SD Memory Card System Concept - 9
3.1 Bus Topology - 9
3.1.1 SD bus - 10
3.1.2 SPI bus - 11
3.2 Bus Protocol - 12
3.2.1 SD bus - 12
3.2.2 SPI Bus - 15
3.3 SD Memory Card - Pins and Registers - 17
3.4 Compatibility to MultiMediaCard - 19
4 SD Memory Card Functional Description - 22
4.1 General - 22
4.2 Card Identification Mode - 23
4.2.1 Card Reset - 23
4.2.2 Operating Voltage Range Validation - 23
4.2.3 Card Identification Process - 25
4.3 Data Transfer Mode - 25
4.3.1 Wide Bus Selection/Deselection - 27
4.3.2 Data Read - 28
4.3.3 Data Write - 28
4.3.4 Erase - 29
4.3.5 Write Protect Management - 30
4.3.6 Card Lock/Unlock Operation (Optional) - 31
4.3.7 Copyright Protection - 33
4.3.8 Application specific commands - 34
4.4 Clock Control - 35
4.5 Cyclic redundancy codes (CRC) - 35
4.6 Error Conditions - 37
4.6.1 CRC and Illegal Command - 37
4.6.2 Read, Write and Erase Time-out Conditions - 37
4.7 Commands - 38
4.7.1 Command Types - 38
4.7.2 Command Format - 38
4.7.3 Command Classes (Redefined for SD Memory Card) - 39
4.7.4 Detailed Command Description - 40
4.8 Card State Transition Table - 45
4.9 Responses - 46
4.10 SD Memory Card Status - 48
4.10.1 Card Status - 48
4.10.2 SD Status - 52
4.11 Memory Array Partitioning - 52

CHENCJB7541

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