at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 571

• Manufacturer Part Number: at91sam9260-cj
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

35.9.6
Name:
Access Type:
This register is write-protected while CMDRDY is 0 in MCI_SR. If an Interrupt command is sent, this register is only write-
able by an interrupt response (field SPCMD). This means that the current command execution cannot be interrupted or
modified.
• CMDNB: Command Number
MultiMedia Card bus command numbers are defined in the MultiMedia Card specification.
• RSPTYP: Response Type
• SPCMD: Special Command
• OPDCMD: Open Drain Command
0 = Push pull command
1 = Open drain command
6221G–ATARM–31-Jan-08
31
23
15
–
–
–
7
0
0
1
1
0
0
0
0
1
1
MCI Command Register
RSPTYP
RSP
30
22
14
MCI_CMDR
Write-only
–
–
–
6
SPCMD
0
0
1
1
0
0
0
1
0
1
29
21
13
Response Type
No response.
48-bit response.
136-bit response.
Reserved.
–
–
5
0
1
0
1
0
1
MAXLAT
TRTYP
28
20
12
–
4
Command
Not a special CMD.
Initialization CMD:
74 clock cycles for initialization sequence.
Synchronized CMD:
Wait for the end of the current data block transfer before sending the
pending command.
Reserved.
Interrupt command:
Corresponds to the Interrupt Mode (CMD40).
Interrupt response:
Corresponds to the Interrupt Mode (CMD40).
OPDCMD
27
19
11
–
3
CMDNB
TRDIR
26
18
10
–
2
AT91SAM9260
SPCMD
25
17
9
1
IOSPCMD
TRCMD
24
16
8
0
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