SanDisk SDSDB-016G-A11 Product Manual - Page 101
Reserved for I/O mode refer to SDIO Card Specification.
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Revision 2.2 Chapter 5 - SPI Protocol SD Card Product Manual CMD SPI Index Mode Argument Resp Abbreviation Description (WP_GRP_SIZE). CMD29 Yes [31:0] data address R1b CLR_WRITE_ PROT If the card has write protection features, this command clears the write protection bit of the addressed group. CMD30 Yes [31:0] write protect data R1 address SEND_WRITE_ PROT If the card has write protection features, this command asks the card to send the status of the write protection bits. CMD31 Reserved CMD32 Yes [31:0] data address R1 ERASE_WR_BLK_ Sets the address of START_ADDR the first write block to be erased. CMD33 Yes [31:0] data address R1 ERASE_WR_BLK_ Sets the address of END_ADDR the last write block in a continuous range to be erased. CMD34 ... CMD37 Reserved for each command system set by switch function command (CMD6). Detailed definition can be referenced in each command system specification. CMD38 Yes [31:0] stuff bits R1b ERASE Erases all previously selected write blocks. CMD39 No --- --- --- --- CMD40 No --- --- --- --- CMD41 Reserved CMD42 Yes [31:0] stuff bits R1 LOCK_UNLOCK Used to set/re-set the password or lock/unlock the card. A transferred data block includes all the command details. The size of the data block is defined with SET_BLOCK_LEN command. CMD43CMD49 CMD51 Reserved. CMD50 Reserved for each command system set by switch function command (CMD6). Detailed definition can be referenced in each command system specification. CMD52 ... CMD54 Reserved for I/O mode (refer to SDIO Card Specification). CMD55 Yes [31:0] stuff bits R1 APP_CMD Notifies the card that the next command is an application-specific command rather than a standard command. © 2004 SanDisk Corporation 5-11 12/08/04