SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 923
SAM3A4C
Manufacturer Part Number
SAM3A4C
Description
Manufacturer
Atmel Corporation
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37.7
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
Bus Topology
Figure 37-3. High Speed MultiMedia Memory Card Bus Topology
The High Speed MultiMedia Card communication is based on a 13-pin serial bus interface. It has
three communication lines and four supply lines.
Table 37-4.
Notes:
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
2. When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK,
1. I: Input, O: Output, PP: Push/Pull, OD: Open Drain.
MCCDA to HSMCIx_CDA, MCCDB to HSMCIx_CDB, MCDAy to HSMCIx_DAy, MCDBy to
HSMCIx_DBy.
Bus Topology
Name
DAT[3]
CMD
VSS1
VDD
CLK
VSS2
DAT[0]
DAT[1]
DAT[2]
DAT[4]
DAT[5]
DAT[6]
DAT[7]
Type
I/O/PP
I/O/PP/OD
S
S
I/O
S
I/O/PP
I/O/PP
I/O/PP
I/O/PP
I/O/PP
I/O/PP
I/O/PP
(1)
1
9 1011
2 3 4 5 6
MMC
Description
Data
Command/response
Supply voltage ground
Supply voltage
Clock
Supply voltage ground
Data 0
Data 1
Data 2
Data 4
Data 5
Data 6
Data 7
1213 8
7
MCCDz
VSS
VDD
VSS
MCDz4
MCDz5
MCDz6
MCDz7
HSMCI Pin
Name
(Slot z)
MCDz3
MCCK
MCDz0
MCDz1
MCDz2
((2)
SAM3X/A
SAM3X/A
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