SanDisk SDSDB-32-201-80 - Industrial Grade Flash Memory Card Product Manual page 72

Secure Digital (SD) Card Protocol Description
Cmd Type Argument
Index
CMD32 ac [31:0] data
address
CMD33 ac [31:0] data
address
CMD34
...
CMD37
CMD38 ac [31:0] don't care*
CMD39
...
CMD41
* The bit places must be filled but the value is irrelevant.
Cmd Type Argument
Index
CMD42
....
CMD54
CMD Type Argument
INDEX
CMD55 ac [31:16] RCA [15:0]
stuff bits
CMD56 adtc [31:1] stuff bits.
[0]: RD/ WR
CMD57 ...
CMD59
CMD60 -63
1) RD/WR: "1" = the host gets a block of data from the card. "0" = the host sends a block of data to the card.
4-22
Table 4-7. Erase Commands (Class 5)
Resp Abbreviation
R1 ERASE_WR_BLK_START
R1 ERASE_WR_BLK_END
R1b
Table 4-8. Lock Card Commands (Class 7)
Resp Abbreviation
SDA Optional Commands, currently supported by SanDisk SD Card.
Table 4-9. Application Specific Commands (Class 8)
Resp. Abbreviation
R1
R1
1
Reserved for Manufacturer
SanDisk Secure Digital (SD) Card Product Manual, Rev. 1.9 © 2003 SANDISK CORPORATION
Sets the address of the first write block to be
erased.
Sets the address of the last write block of the
continuous range to be erased.
Reserved
ERASE Erases all previously selected write blocks.
Reserved
APP_CMD Indicates to the card that the next command is an
application specific command rather than a
standard command
GEN_CMD Used either to transfer a data block to the card or
to get a data block from the card for general
purpose / application specific commands. The
size of the data block shall be set by the
SET_BLOCK_LEN command.
Reserved
Command Description
Command Description
Command Description