at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 375
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at91rm3400
Manufacturer Part Number
at91rm3400
Description
Atmel Advanced At91 Arm Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT91RM3400.pdf
(461 pages)
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1790A–ATARM–11/03
Figure 155. SD Memory Card Bus Topology
The SD Memory Card bus includes the signals listed in Table 65.
Table 65. SD Memory Card Bus Signals
Note:
Figure 156. SD Card Bus Connections
Pin
Number
1
2
3
4
5
6
7
8
9
1. I: input, O: output, PP: Push Pull, OD: Open Drain
Name
CD/DAT[3]
CMD
VSS1
VDD
CLK
VSS2
DAT[0]
DAT[1]
DAT[2]
MCDA0 - MCDA3
MCDB0 - MCDB3
MCCDA
MCCDB
Type
I/O/PP
PP
S
S
I
S
I/O/PP
I/O/PP
I/O/PP
MCCK
(1)
9
1
2 3 4 5 6
Description
Card detect/ Data line Bit 3
Command/response
Supply voltage ground
Supply voltage
Clock
Supply voltage ground
Data line Bit 0
Data line Bit 1
Data line Bit 2
SD CARD
7 8
SD CARD 1
SD CARD 2
AT91RM3400
MCDA0/MCDB0
MCDA1/MCDB1
MCDA2/MCDB2
MCI Pin Name
MCDA3/MCDB3
MCCDA/MCCDB
VSS
VDD
MCCK
VSS
375
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