SAM9G35_14 Datasheet, PDF (616/1293 Pages) ATMEL Corporation – ARM-based Embedded MPU

Figure 34-4. MMC Bus Connections (One Slot)
HSMCI
MCDA0
MCCDA
MCCK
1234567
9 1011 1213 8
MMC1
1234567
9 1011 1213 8
MMC2
1234567
9 1011 1213 8
MMC3
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 34-5. SD Memory Card Bus Topology
1 2 3 4 5 6 78
9
SD CARD
The SD Memory Card bus includes the signals listed in Table 34-5.
Table 34-5. 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
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.
SAM9G35 [DATASHEET]
11053E–ATARM–10-Mar-2014
616