SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 924
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SAM3A4C
Manufacturer Part Number
SAM3A4C
Description
Manufacturer
Atmel Corporation
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924
924
SAM3X/A
SAM3X/A
Figure 37-4. MMC Bus Connections (One Slot)
Note:
Figure 37-5. SD Memory Card Bus Topology
The SD Memory Card bus includes the signals listed in
Table 37-5.
Notes:
Pin
Number
1
2
3
4
5
6
7
8
9
When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK,
MCCDA to HSMCIx_CDA MCDAy to HSMCIx_DAy.
1. I: input, O: output, PP: Push Pull, OD: Open Drain.
2. When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK,
MCCDA to HSMCIx_CDA, MCCDB to HSMCIx_CDB, MCDAy to HSMCIx_DAy, MCDBy to
HSMCIx_DBy.
HSMCI
SD Memory Card Bus Signals
Name
CD/DAT[3]
CMD
VSS1
VDD
CLK
VSS2
DAT[0]
DAT[1]
DAT[2]
MCCDA
MCCK
MCDA0
PP
S
Type
I/O/PP
S
I/O
S
I/O/PP
I/O/PP
I/O/PP
(1)
1
9 1011
2 3 4 5 6
MMC1
9
1
1213 8
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 or Interrupt
Data line Bit 2
2 3 4 5 6
SD CARD
7
7 8
1
9 1011
Table
2 3 4 5 6
MMC2
1213 8
37-5.
7
HSMCI Pin
Name
(Slot z)
MCDz3
MCCDz
VSS
VDD
MCCK
VSS
MCDz0
MCDz1
MCDz2
1
9 1011
2 3 4 5 6
MMC3
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
(2)
1213 8
7
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