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| 型號： | MC2GH512NMCA-2SA00 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | SAMSUNG MultiMediaCard |
| 中文描述： | 三星多媒體 |
| 文件頁數(shù)： | 89/102頁 |
| 文件大?。?/td> | 1384K |
| 代理商： | MC2GH512NMCA-2SA00 |
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MultiMediaCard
TM
89
Sep.22.2005
Revision 0.3
7.17.3 Command Description
The following table provides a detailed description of the SPI mode commands. The responses are defined in Chapter
7.18. Table 7-5 lists all MultiMediaCard commands. A “yes” in the SPI mode column indicates that the command is sup-
ported in SPI mode. With these restrictions, the command class description in the CSD is still valid. If a command does not
require an argument, the value of this field should be set to zero. The reserved commands are also reserved in MultiMedi-
aCard mode.
The card can be switched to a new command space, using the SWITCH command, just as in MultiMediaCard mode; with
the only limitation that in SPI mode the bus is always one bit wide.
The binary code of a command is defined by the mnemonic symbol. As an example, the content of the
command index
field is (binary) ‘000000’ for CMD0 and ‘100111’ for CMD39.
Card CMD
Class
(CCC)
Class Description
Supported commands
1
7
8
3
4
0 1 6 8 9 1
0
1
2
1
3
+
1
6
1
2
2
2
5
2
7
2
8
2
9
3
0
3
5
3
6
3
8
4
2
5
5
5
6
5
8
+ +
5
9
class 0
class 1
class 2
class 3
class 4
class 5
class 6
class 7
class 8
class 9
class 10-11
Basic
Not supported in SPI
Block read
Not supported in SPI
Block write
Erase
Write-protection
Lock Card
Application specific
Not supported in SPI
Reserved
+ + + + + +
+
+ + + +
+
+ + + +
+ + +
+ + +
+
+
+ +
CMD
INDEX
SPI
Mode
Argument
Resp
Abbreviation
Command Description
CMD0
Yes
None
R1
GO_IDLE_STATE
Resets the MultiMediaCard
CMD1
Yes
None
R1
SEND_OP_COND
Activates the card’s initialization process
CMD2
No
CMD3
No
CMD4
No
CMD5
reserved
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