SanDisk SDSDH-1024 Product Manual - Page 41

Identifier, Value, Description, Clear, Cond.

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Revision 2.2 Chapter 3 - SD Card Interface Description SD Card Product Manual Bit 19 18 17 16 15 14 13 12-9 8 7-6 5 4 3 2 1-0 Identifier ERROR Type E R X Reserved Reserved CID/CSD_ OVERWRITE E R X WP_ERASE_ S X SKIP CARD_ECC_ S X DISABLED ERASE_ S R RESET CURRENT_ S X STATE READY_FOR_ S X DATA Value 0 = no error 1 = error 0 = no error 1 = error 0 = not protected 1 = protected 0 = enabled 1 = disabled 0 = cleared 1 = reset 0 = idle 1 = ready 2 = ident 3 = stby 4 = tran 5 = data 6 = rcv 7 = prg 8 = dis 9-15 = reserved 0 = not ready 1 = ready Description A general or an unknown error occurred during the operation. Clear Cond. C Can be either one of the C following errors: The CID register has been already written and can not be overwritten- 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. Only partial address space C was erased due to existing write protected blocks. The command has been A executed without using the internal ECC. An erase sequence was C cleared before executing because an out of erase sequence command was received. The state of the card when B receiving 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. Corresponds to buffer empty A signaling on the bus. APP_CMD S R 0 = disabled 1 = enabled The card will expect ACMD, C or indication that the command has been interpreted as ACMD. AKE_SEQ_ ERROR E R 0 = no error 1 = error Error in the sequence of C authentication process. Reserved for application-specific commands Reserved for manufacturer test mode © 2004 SanDisk Corporation 3-21 12/08/04

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Chapter 3 – SD Card Interface Description
Revision 2.2
SD Card Product Manual
© 2004 SanDisk Corporation
3-21
12/08/04
Bit
Identifier
Type
Value
Description
Clear
Cond.
19
ERROR
E R X
0 = no error
1 = error
A general or an unknown
error occurred during the
operation.
C
18
Reserved
17
Reserved
16
CID/CSD_
OVERWRITE
E R X
0 = no error
1 = error
Can be either one of the
following errors: The CID
register has been already
written and can not be
overwritten- 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
15
WP_ERASE_
SKIP
S X
0 = not protected
1 = protected
Only partial address space
was erased due to existing
write protected blocks.
C
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 = reset
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
9-15 = reserved
The state of the card when
receiving 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 indication that the
command has been
interpreted as ACMD.
C
4
3
AKE_SEQ_
ERROR
E R
0 = no error
1 = error
Error in the sequence of
authentication process.
C
2
Reserved for application-specific commands
1-0
Reserved for manufacturer test mode