Datasheet

767
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
35.7 Bus Topology
Figure 35-3. 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.
Notes: 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, MCDAy to HSMCIx_DAy.
Table 35-4. Bus Topology
Pin Number Name Type
(1)
Description
HSMCI Pin Name
(2)
(Slot z)
1 DAT[3] I/O/PP Data MCDz3
2 CMD I/O/PP/OD Command/response MCCDz
3 VSS1 S Supply voltage ground VSS
4 VDD S Supply voltage VDD
5 CLK I/O Clock MCCK
6 VSS2 S Supply voltage ground VSS
7 DAT[0] I/O/PP Data 0 MCDz0
8 DAT[1] I/O/PP Data 1 MCDz1
9 DAT[2] I/O/PP Data 2 MCDz2
10 DAT[4] I/O/PP Data 4 MCDz4
11 DAT[5] I/O/PP Data 5 MCDz5
12 DAT[6] I/O/PP Data 6 MCDz6
13 DAT[7] I/O/PP Data 7 MCDz7
2345617
MMC
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