SanDisk SD Card

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Revision 2.2Chapter 4 – SD Card Protocol DescriptionSanDisk SD Card Product ManualACMD Index Type Argument Resp. Abbreviation Command DescriptionACMD42 ac [31:1] stuffbits [0]set_cdR1 SET_CLR_CARD_DETECT Connect[1]/Disconnect[0]the 50KOhm pull-upresistor on CD/DAT3 (pin1) of the card.ACMD43ACMD49--- --- --- --- Reserved for SD securityapplications.ACMD51 adtc [31:0] stuffbitsR1 SEND_SCR Reads the SDConfiguration Register(SCR).4.9 Card State TransitionTable 4-18 defines the SD card state-transition (dependent on the received command). TheSD Card application-specific command state-transitions can be found in Class 8.Table 4-18Card State Transition TableCurrent Statusidle ready ident stby tran data rcv prg dis inaState ChangeTriggerChanges toClassIndependent“Operationcomplete”--- --- --- --- --- --- --- tran stby ---Class 0CMD0 idle idle idle idle idle idle idle idle idle ---CMD2 --- ident --- --- --- --- --- --- --- ---CMD3 --- --- stby stby --- --- --- --- --- ---CMD4 --- --- --- stby --- --- --- --- --- ---CMD7, card isaddressedCMD7, card isnot addressed--- --- --- tran --- --- --- --- prg ------ --- --- stby stby stby --- dis --- ---CMD9 --- --- --- stby --- --- --- --- --- ---CMD10 --- --- --- stby --- --- --- --- --- ---CMD12 --- --- --- --- --- tran prg --- --- ---CMD13 --- --- --- stby tran data rcv prg dis ---CMD15 --- --- --- ina ina ina ina ina ina ---Class 2CMD16 --- --- --- --- tran --- --- --- --- ---CMD17 --- --- --- --- data --- --- --- --- ---CMD18 --- --- --- --- data --- --- --- --- ---Class 4CMD16 see class 2© 2004 SanDisk Corporation 4-38 12/08/04
Revision 2.2Chapter 4 – SD Card Protocol DescriptionSanDisk SD Card Product ManualCurrent Statusidle ready ident stby tran data rcv prg dis inaState ChangeTriggerChanges toCMD24 --- --- --- --- rcv --- --- --- --- ---CMD25 --- --- --- --- rcv --- --- --- --- ---CMD27 --- --- --- --- rcv --- --- --- --- ---Class 6CMD28 --- --- --- --- prg --- --- --- --- ---CMD29 --- --- --- --- prg --- --- --- --- ---CMD30 --- --- --- --- data --- --- --- --- ---Class 5CMD32 --- --- --- --- tran --- --- --- --- ---CMD33 --- --- --- --- tran --- --- --- --- ---CMD38 --- --- --- --- prg --- --- --- --- ---Class 7CMD42 --- --- --- --- rcv --- --- --- --- ---Class 8CMD55 idle - - stby tran data rcv prg dis -CMC56:RD/WR = 0CMD56:RD/WR = 1- - - - rcv - - - - -- - - - data - - - - -ACMD6 - - - - tran - - - - -ACMD13 - - - - data - - - - -ACMD22 - - - - data - - - - -ACMD18, 25,26, 38, 43, 44,45, 46, 47, 48,49ACMD41, cardV DD rangecompatibleACMD41, cardbusyACMD41, cardV DD range notcompatibleRefer to the SD Card Security Specification for an explanation of the SD Security features.The SanDisk SD Card supports all the security-related commands as explained in thespecification.ready - - - - - - - - -idle - - - - - - - - -ina - - - - - - - - -ACMD42 - - - - tran - - - - -ACMD51 - - - - data - - - - -Class 9CMD52-CMD54Refer to SDIO Specification.© 2004 SanDisk Corporation 4-39 12/08/04
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Revision 2.2SanDisk SD Card Product
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Revision 2.2Chapter 1 - Introductio
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Revision 2.2Chapter 2 - Product Spe
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Revision 2.2Chapter 3 - SD Card Int
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Page 114 and 115: Revision 2.2Appendix C -Limited War
Page 116 and 117: Revision 2.2Appendix D -Disclaimer
Page 118 and 119: Host Design Considerations:Applicat
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SanDisk SD Card

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