SAM9260_14 Datasheet, PDF (535/784 Pages) ATMEL Corporation – AT91SAM ARM-based Embbedded MPU

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 34-3.
Table 34-3.
Pin
Number
1
2
3
4
5
6
7
8
9
SD Memory Card Bus Signals
Name
CD/DAT[3]
CMD
VSS1
VDD
CLK
VSS2
DAT[0]
DAT[1]
DAT[2]
Type⁽¹⁾
I/O/PP
PP
S
S
I/O
S
I/O/PP
I/O/PP
I/O/PP
Description
Card detect/ Data line Bit 3
Command/response
Supply voltage ground
Supply voltage
Clock
Supply voltage ground
Data line Bit 0
Data line Bit 1 or Interrupt
Data line Bit 2
MCI Pin Name⁽²⁾
(Slot z)
MCDz3
MCCDz
VSS
VDD
MCCK
VSS
MCDz0
MCDz1
MCDz2
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, MCCDB
to MCIx_CDB, MCDAy to MCIx_DAy, MCDBy to MCIx_DBy.
Figure 34-6. SD Card Bus Connections with One Slot
MCDA0 - MCDA3
MCCK
MCCDA
SD CARD
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 34-7. SD Card Bus Connections with Two Slots
MCDA0 - MCDA3
MCCK
MCCDA
SD CARD 1
MCDB0 - MCDB3
MCCDB
SD CARD 2
SAM9260 [DATASHEET]
6221K–ATARM–15-Oct-12
535