AT91RM3400-DK Atmel, AT91RM3400-DK Datasheet - Page 374
AT91RM3400-DK
Manufacturer Part Number
AT91RM3400-DK
Description
KIT DEV FOR AT91RM3400
Manufacturer
Atmel
Series
AT91SAM Smart ARMr
Type
MCUr
Datasheets
1.AT91RM3400-DK.pdf
(461 pages)
2.AT91RM3400-DK.pdf
(2 pages)
3.AT91RM3400-DK.pdf
(25 pages)
Specifications of AT91RM3400-DK
Contents
Evaluation Board, Software and Documentation
Processor To Be Evaluated
AT91RM3400
Data Bus Width
32 bit
Interface Type
RS-232, USB
For Use With/related Products
AT91RM3400
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Product Dependencies
I/O Lines
Power
Management
Interrupt
Bus Topology
374
AT91RM3400
The pins used for interfacing the MultiMedia Cards or SD Cards may be multiplexed with PIO
lines. The programmer must first program the PIO controllers to assign the peripheral func-
tions to MCI pins.
The MCI may be clocked through the Power Management Controller (PMC), so the program-
mer must first to 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.
Figure 153. MultiMedia Memory Card Bus Topology
The MultiMedia Card communication is based on a 7-pin serial bus interface. It has three com-
munication lines and four supply lines.
Table 64. Bus Topology
Note:
Figure 154. MMC Bus Connections
Pin
Number
1
2
3
4
5
6
7
1. I: Input, O: Output, PP: Push/Pull, OD: Open Drain.
MCI
MCCDA
MCDA0
MCCK
Name
RSV
CMD
VSS1
VDD
CLK
VSS2
DAT[0]
Type
NC
I/O/PP/OD
S
S
I
S
I/O/PP
1
(1)
2 3 4 5 6
MMC1
1
2 3 4 5 6
MMC
7
Description
Not connected
Command/response
Supply voltage ground
Supply voltage
Clock
Supply voltage ground
Data 0
7
1
2 3 4 5 6
MMC2
7
MCI Pin Name
MCCDA/MCCDB
VSS
VDD
MCCK
VSS
MCDA0/MCDB0
1
2 3 4 5 6
MMC3
1790A–ATARM–11/03
7
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