Specifications

©Copyright 2001-2013 SD Group (Panasonic, SanDisk, Toshiba) and SD Card Association
Physical Layer Simplified Specification Version 4.10
164
CMD
INDEX
SPI
Mode
Argument Resp Abbreviation Command Description
CMD8
9
Yes
[31:12]Reserved
bits
[11:8]supply
voltage(VHS)
[7:0]check pattern
R7
SEND_IF_COND
Sends SD Memory Card interface
condition that includes host supply
voltage information and asks the
accessed card whether card can
operate in supplied voltage range.
Reserved bits shall be set to '0'.
CMD9
Yes
[31:0] stuff bits
R1
SEND_CSD
Asks the selected card to send its
card-specific data (CSD)
CMD10
Yes
[31:0] stuff bits
R1
SEND_CID
Asks the selected card to send its
card identification (CID)
CMD11
No
CMD12
Yes
[31:0] stuff bits
R1b
5
STOP_
TRANSMISSION
Forces the card to stop transmission
in Multiple Block Read Operation
CMD13
Yes
[31:0] stuff bits
R2
SEND_STATUS
Asks the selected card to send its sta-
tus register.
CMD14
reserved
CMD15
No
CMD16
Yes
[31:0] block length
R1
SET_BLOCKLEN
In case of SDSC Card, block length is
set by this command.
In case of SDHC and SDXC Cards,
block length of the memory access
commands are fixed to 512 bytes.
The length of LOCK_UNLOCK
command is set by this command
regardless of card capacity.
CMD17
Yes
[31:0] data
address
10
R1
READ_SINGLE_
BLOCK
Reads a block of the size selected by
the SET_BLOCKLEN command.
3
CMD18
Yes
[31:0] data
address
10
R1
READ_MULTIPL
E_BLOCK
Continuously transfers data blocks
from card to host until interrupted by a
STOP_TRANSMISSION command.
CMD19
reserved
CMD20
No
CMD21...
CMD23
reserved
CMD24
Yes
[31:0] data
address
10
R1
WRITE_BLOCK
Writes a block of the size selected by
the SET_BLOCKLEN command.
4
CMD25
Yes
[31:0] data
address
10
R1
WRITE_MULTIPL
E_BLOCK
Continuously writes blocks of data
until 'Stop Tran' token is sent (instead
'Start Block').
CMD26
No
CMD27
Yes
[31:0] stuff bits
R1
PROGRAM_CSD
Programming of the programmable
bits of the CSD.