Specifications
©Copyright 2001-2013 SD Group (Panasonic, SanDisk, Toshiba) and SD Card Association
Physical Layer Simplified Specification Version 4.10
79
Current State
idle
ready
ident
stby
tran
data
rcv
prg
dis
ina
class 7
CMD40
-
-
-
-
data
-
-
-
-
-
CMD42
-
-
-
-
rcv
-
-
-
-
-
class 8
CMD55
idle
-
-
stby
tran
data
rcv
prg
dis
-
CMD56; RD/WR = 0
-
-
-
-
rcv
-
-
-
-
-
CMD56; RD/WR = 1
-
-
-
-
data
-
-
-
-
-
ACMD6
-
-
-
-
tran
-
-
-
-
-
ACMD13
-
-
-
-
data
-
-
-
-
-
ACMD14-16
Refer to DPS Specification
ACMD22
-
-
-
-
data
-
-
-
-
-
ACMD23
-
-
-
-
tran
-
-
-
-
-
ACMD28
Refer to DPS Specification
ACMD18,25,26,38,
43,44,45,46,47,48,49
Refer to the "Part3 Security Specification" for information about the SD
Security Features
ACMD41, OCR check is OK
and card is not busy
ready
-
-
-
-
-
-
-
-
-
ACMD41, OCR check is OK
and card is busy
2
idle
-
-
-
-
-
-
-
-
-
ACMD41, OCR check fails
ina
-
-
-
-
-
-
-
-
-
ACMD41, query mode
idle
-
-
-
-
-
-
-
-
-
ACMD42
-
-
-
-
tran
-
-
-
-
-
ACMD51
-
-
-
-
data
-
-
-
-
-
class 9
CMD52-CMD54
Refer to the "SDIO Card Specification"
class 10
1
CMD6
-
-
-
-
data
-
-
-
-
-
CMD34-37,50,57
Refer to each command system specification
class 11
CMD21
Refer to DPS Specification
CMD48
-
-
-
-
data
-
-
-
-
-
CMD49
-
-
-
-
rcv
-
-
-
-
-
CMD58
-
-
-
-
data
-
-
-
-
-
CMD59
-
-
-
-
rcv
-
-
-
-
-
CMD41,CMD43-47
reserved
CMD60...CMD63
reserved for manufacturer
Note (1): Class 10 commands were defined in Version 1.10.
Note (2): Card returns busy in case of following.
- Card executes internal initialization process
- When HCS in the argument is set to 0 to SDHC or SDXC Card.
Table 4-34: Card State Transition Table
The state transitions of the SD Memory Card application-specific commands are given under Class 8,
above.