Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
914
Figure 37-4. MMC Bus Connections (One Slot)
Note: When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK, MCCDA to HSMCIx_CDA
MCDAy to HSMCIx_DAy.
Figure 37-5. SD Memory Card Bus Topology
The SD Memory Card bus includes the signals listed in Table 37-5.
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, MCCDB to HSMCIx_CDB, MCDAy to HSMCIx_DAy, MCDBy to HSMCIx_DBy.
Table 37-5. SD Memory Card Bus Signals
Pin
Number Name Type
(1)
Description
HSMCI Pin
Name
(2)
(Slot z)
1 CD/DAT[3] I/O/PP Card detect/ Data line Bit 3 MCDz3
2 CMD PP 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 line Bit 0 MCDz0
8 DAT[1] I/O/PP Data line Bit 1 or Interrupt MCDz1
9 DAT[2] I/O/PP Data line Bit 2 MCDz2
MCCDA
MCDA0
MCCK
HSMCI
2 3 45617
MMC1
9 1011 12138
2 3 45617
MMC2
9 1011 12138
2 3 45617
MMC3
9 1011 12138
2 3 456178
SD CARD
9