Datasheet

SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
550
34.7 Bus Topology
Figure 34-3. Multimedia Memory Card Bus Topology
The MultiMedia Card communication is based on a 7-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 MCI (x MCI) are embedded in a product, MCCK refers to MCIx_CK, MCCDA to MCIx_CDA,
MCDAy to MCIx_DAy.
Figure 34-4. MMC Bus Connections (One Slot)
Note: When several MCI (x MCI) are embedded in a product, MCCK refers to MCIx_CK, MCCDA to MCIx_CDA MCDAy to
MCIx_DAy.
Figure 34-5. SD Memory Card Bus Topology
The SD Memory Card bus includes the signals listed in Table 34-3.
Table 34-2. Bus Topology
Pin Number Name Type
(1)
Description
MCI Pin Name
(2)
(Slot z)
1 RSV NC Not connected -
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
2345617
MMC
234561 7 234561 7 2345617
MCCDA
MCDA0
MCCK
MMC1 MMC2 MMC3
MCI
23456178
SD CARD
9