Command Description - SanDisk SDSDB-016G-A11 Product Manual

Revision 2.2
Class
CMD
CMD28
CMD29
CMD30
CMD32
CMD33
21
CMD34
to
CMD37
CMD38
CMD42
22
CMD50
CMD52
CMD53
CMD55
CMD56
23
CMD57
ACMD6
ACMD13
ACMD22
ACMD41
ACMD42
ACMD51
R = Reserved
4.8.4

Command Description

All future reserved commands and their responses must be 48 bits long. Responses may
not have any response. Table 4-16 details the SD Card bus commands.
Table 4-16
CMD Index
Basic Commands (Class 0)
CMD0
CMD1
CMD2
21
This command is newly defined in SD Card Physical Description Spec. v1.10 .
22
Ibid.
23
Ibid.
© 2004 SanDisk Corporation
0 1 2 3 4
Basic R Block R Block
Read Write
SD Card Bus Command Descriptions
Type Argument
bc [31:0] stuff
bits
Reserved
bcr [31:0]stuff
bits
4-32
Chapter 4 – SD Card Protocol Description
SanDisk SD Card Product Manual
5 6 7
Erase Write Lock
Protec Card Specific
tion
+
+
+
+
+
+
+
Resp. Abbreviation
--- GO_IDLE_STATE
R2 ALL_SEND_CID
8 9 10 11
App- I/O Switch
Mode
+
+
+
+
+
+
+
+
+
+
+
+
+
Description
Reset all cards to Idle
State.
Asks all cards to send
their CID numbers on
the CMD line.
12/08/04
R