MC2GH256NMCA-2SA00 SAMSUNG [Samsung semiconductor], MC2GH256NMCA-2SA00 Datasheet - Page 90

• Manufacturer Part Number: MC2GH256NMCA-2SA00
• Description: SAMSUNG MultiMediaCard
• Manufacturer: SAMSUNG [Samsung semiconductor]

CMD6
CMD7
CMD8
CMD9
CMD10
CMD11
CMD12
CMD13
CMD14
CMD15
CMD16
CMD17
CMD18
CMD19
CMD20
CMD21
...
CMD22
CMD23
Revision 0.3
INDEX
CMD
Yes
No
Yes
Yes
Yes
No
Yes
Yes
This command is not applicable in SPI mode and the card should regard it as illegal command
No
Yes
Yes
Yes
This command is not applicable in SPI mode and the card should regard it as illegal command
No
reserved
Yes
Mode
SPI
[31:26] Set to 0
[25:24] Access
[23:16] Index
[15:8] Value
[7:3] Set to 0
[2:0] Cmd Set
[31:0] stuff bits
None
None
None
None
[31:0] block length R1
[31:0] data
address
[31:0] data
address
[31:16] set to 0
[15:0] number of
blocks
Argument
R1b
R1
R1
R1
R1
R2
R1
R1
R1
Resp
SWITCH
SEND_EXT_CSD
SEND_CSD
SEND_CID
STOP_TRANSMISSION Stop transmission on multiple block read
SEND_STATUS
SET_BLOCKLEN
READ_
SINGLE_BLOCK
READ_
MULTIPLE_BLOCK
SET_
BLOCK_COUNT
Abbreviation
90
Switches the mode of operation of the
selected card and modifies the EXT_CSD
registers. Access modes are:
00Command Set
01Set bits
10Clear bits
11Write Byte
The card sends its EXT_CSD register as a
block of data.
Asks the selected card to send its card-
specific data (CSD)
Asks the selected card to send its card
identification (CID)
Asks the selected card to send its status
register
selects a block length (in bytes) for all fol-
lowing block commands (read and write)
Reads a block of the size selected by the
SET_BLOCKLEN command
Continuously transfers data blocks from
card to host until interrupted by a stop
command or the requested number of data
blocks transmitted
Defines the number of blocks which are
going to be transferred in the immediately
exceeding multiple block read or write
command.
If the argument is all 0s, then the subse-
quent read/write operation will be open-
ended.
Command Description
MultiMediaCard
Sep.22.2005
2
TM
1