at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 552
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at91sam9260-cj
Manufacturer Part Number
at91sam9260-cj
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9260-CJ.pdf
(790 pages)
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35.5.2
35.5.3
35.6
Figure 35-3. Multimedia Memory Card Bus Topology
Figure 35-4. MMC Bus Connections (One Slot)
Note:
6221G–ATARM–31-Jan-08
Bus Topology
When several MCI (x MCI) are embedded in a product, MCCK refers to MCIx_CK, MCCDA to MCIx_CDA MCDAy to MCIx_DAy.
Power Management
Interrupt
The MCI may be clocked through the Power Management Controller (PMC), so the programmer
must first configure the PMC to enable the MCI clock.
The MCI interface has an interrupt line connected to the Advanced Interrupt Controller (AIC).
Handling the MCI interrupt requires programming the AIC before configuring the MCI.
The MultiMedia Card communication is based on a 7-pin serial bus interface. It has three com-
munication lines and four supply lines.
Table 35-2.
Notes:
Pin
Number
1
2
3
4
5
6
7
MCI
MCCDA
MCCK
MCDA0
1. I: Input, O: Output, PP: Push/Pull, OD: Open Drain.
2. When several MCI (x MCI) are embedded in a product, MCCK refers to MCIx_CK, MCCDA to
MCIx_CDA, MCCDB to MCIx_CDB, MCDAy to MCIx_DAy, MCDBy to MCIx_DBy.
Bus Topology
Name
RSV
CMD
VSS1
VDD
CLK
VSS2
DAT[0]
1
2 3 4 5 6
MMC1
1
2 3 4 5 6
Type
NC
I/O/PP/OD
S
S
I/O
S
I/O/PP
MMC
7
(1)
7
1
2 3 4 5 6
MMC2
Description
Not connected
Command/response
Supply voltage ground
Supply voltage
Clock
Supply voltage ground
Data 0
7
1
2 3 4 5 6
MMC3
AT91SAM9260
7
MCCDz
MCI Pin Name
(Slot z)
-
VSS
VDD
MCCK
VSS
MCDz0
(2)
552
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