Specifications

©Copyright 2001-2013 SD Group (Panasonic, SanDisk, Toshiba) and SD Card Association
Physical Layer Simplified Specification Version 4.10
174
Identifier
Included
in resp
Type
1
Value Description
Clear
Condi
tion
2
Error
R2
dataEr
E R X
'0'= no error
'1'= error
A general or an unknown error
occurred during the operation.
C
CSD_OVERWRITE
R2
E R X
'0'= no error
'1'= error
Can be either of the following
errors:
- The read only section of the CSD
does not match the card content.
- An attempt to reverse the copy
(set as original) or permanent WP
(unprotected) bits was made.
C
WP erase skip
R2
S X
'0'= not protected
'1'= protected
Only partial address space was
erased due to existing write pro-
tected blocks.
C
Lock/Unlock cmd
failed
R2
X
'0'= no error
'1'= error
Sequence or password errors dur-
ing card lock/unlock operation.
C
Card is locked
R2
S X
'0' = card is not
locked
'1' = card is
locked
Card is locked by a user password.
A
Erase reset
R1 R2
S R
'0'= cleared
'1'= set
An erase sequence was cleared
before executing because an out of
erase sequence command was
received
C
In Idle state
R1 R2
S R
0 = Card is ready
1 = Card is in idle
state
The card enters the idle state after
power up or reset command. It will
exit this state and become ready
upon completion of its initialization
procedures.
A
Table 7-6: SPI Mode Status Bits
1) Type:
E: Error bit.
S: State bit.
R: Detected and set for the actual command response.
X: Detected and set during command execution. The host can get the status by issuing a command
with R1 response.
2) Clear Condition:
A: According to the current state of the card.
C: Clear by read
7.4 Card Registers
In SPI mode, only the RCA register is not accessible. Formats of other registers are identical to the
formats in the SD mode.