Revision 2.2
CMD Index
CMD3
CMD4
CMD5
CMD7
CMD8
CMD9
CMD10
CMD11
CMD12
CMD13
CMD14
CMD15
Block Read Commands (Class 2)
CMD16
© 2004 SanDisk Corporation
Type
Argument
Resp.
bcr
[31:0]stuff
R6
bits
bcr
[31:0]stuff
---
bits
Reserved for I/O cards (refer to the SDIO Card Specification)
ac
[31:16]RCA
R1b
[15:0] don't
(from
care
selected
card
only)
Reserved
ac
[31:16]RCA
R2
[15:0] stuff
bits
ac
[31:16]RCA
R2
[15:0] stuff
bits
Reserved
ac
[31:0] stuff
R1b
bits
ac
[31:16]RCA
R1
[15:0] stuff
bits
Reserved
ac
[31:16]RCA
---
[15:0] stuff
bits
ac
[31:0] block
R1
length
4-33
Chapter 4 – SD Card Protocol Description
SanDisk SD Card Product Manual
Abbreviation
SEND_RELATIVE_ADDR
SET_DSR
SELECT/DESELECT_CARD
SEND_CSD
SEND_CID
STOP_TRANSMISSION
SEND_STATUS
GO_INACTIVE_STATE
SET_BLOCKLEN
Description
Asks the card to publish
a new relative address
Programs the DSR of all
cards
Toggles card between
the stand-by and
transfer states -or-
programming and
disconnect states. In
both cases, the card is
selected by its own
relative address and
deselected by any other
address; address 0
deselects all. If the
RCA=0, the host may do
one of the following:
>>Use other RCA
number to perform card
de-selection.
>>Re-send CMD3 to
change its RCA number
to other than 0 and use
CMD7 w/RCA=0 for card
de-selection
Sends addressed card's
card-specific data (CSD)
on the CMD line.
Sends addressed card's
card identification (CID)
on the CMD line.
Forces the card to stop
transmission.
Sends addressed card's
Status Register.
Sets the card to inactive
state.
Sets the block length (in
bytes) for all following
block commands (read,
write, lock). Default
block length is fixed
512Bytes. If block length
is set bigger than
512Bytes, the card will
set the
BLOCK_LEN_ERROR
bit. Supported only if
Partial block RD/WR
operation are allowed in
12/08/04
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