Specifications

©Copyright 2001-2013 SD Group (Panasonic, SanDisk, Toshiba) and SD Card Association
Physical Layer Simplified Specification Version 4.10
85
Bits Identifier Type Value Description
Clear
Condition
14
CARD_ECC_DISABLED
S X
'0'= enabled
'1'= disabled
The command has been executed
without using the internal ECC.
A
13
ERASE_RESET
S R
'0'= cleared
'1'= set
An erase sequence was cleared
before executing because an out of
erase sequence command was
received
C
12:9
CURRENT_STATE
S X
0 = idle
1 = ready
2 = ident
3 = stby
4 = tran
5 = data
6 = rcv
7 = prg
8 = dis
9-14 = reserved
15
= reserved for
I/O mode
The state of the card when receiv-
ing the command. If the command
execution causes a state change, it
will be visible to the host in the
response to the next command.
The four bits are interpreted as a
binary coded number between 0
and 15.
B
8
READY_FOR_DATA
S X
'0'= not ready
'1'= ready
Corresponds to buffer empty
signaling on the bus
A
7:6
5
APP_CMD
S R
'0' = Disabled
'1' = Enabled
The card will expect ACMD, or an
indication that the command has
been interpreted as ACMD
C
4
reserved for SD I/O Card
3
AKE_SEQ_ERROR
(SD Memory Card app.
spec.)
E R
'0' = no error
'1' = error
Error in the sequence of the
authentication process
C
2
reserved for application specific commands
1, 0
reserved for manufacturer test mode
Table 4-41: Card Status