SanDisk SDSDB-016G-P36 Product Manual - Page 78
CMD Index, Argument, Resp., Abbreviation, Description, Block Write Commands Class 4, Write
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Revision 2.2 Chapter 4 - SD Card Protocol Description SanDisk SD Card Product Manual CMD Index Type Argument Resp. Abbreviation CMD17 adtc [31:0] data address R1 READ_SINGLE_BLOCK CMD18 adtc [31:0] data address R1 READ_MULTIPLE_BLOCK CMD19 ... CMD23 Reserved Block Write Commands (Class 4) CMD16 ac [31:0] block R1 SET_BLOCKLEN length CMD24 adtc [31:0] data address R1 WRITE_BLOCK CMD25 adtc [31:0] data address R1 WRITE_MULTIPLE_BLOCK CMD26 CMD27 Reserved for manufacturer adtc [31:0] stuff R1 bits PROGRAM_CSD Write Protection Commands (Class 6) CMD28 ac [31:0] data address R1b SET_WRITE_PROT CMD29 CMD30 ac [31:0] data address R1b CLR_WRITE_PROT adtc [31:0] writeprotect data address R1 SEND_WRITE_PROT Description CSD. Reads a block of the size selected by the SET_BLOCKLEN command.24 Sends blocks of data continuously until interrupted by a stop transmission command. Sets the block length (in bytes) for all following block commands (read, write, lock). Default block length is specified in the CSD. Supported only if Partial block RD/WR operation are allowed in CSD. Writes a block of the size selected by the SET_BLOCKLEN command25 Writes blocks of data continuously until a STOP_TRANSMISSION command is received. Programs the programmable bits of the CSD. If card supports this feature, it sets the write protection bit of the addressed group. The properties of write protection are coded in the card-specific data (WP_GRP_SIZE). If card supports this feature, it clears the write protection bit of the addressed. If card supports this feature, it asks the card to send the status of the write protection. 32 write-protection bits 24 The data transferred must not cross a physical block boundary unless READ_BLK_MISALIGN is set in the CSD Register. 25 The data transferred must not cross a physical block boundary unless WRITE_BLK_MISALIGN is set in the CSD. In case that write partial blocks is not supported then the block length=default block length (given in CSD). © 2004 SanDisk Corporation 4-34 12/08/04