Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Data Sheet
Product codes
AT91SAM9X25-EK
608
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
34.5 Pin Name List
Notes: 1. When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK, MCCDA to
HSMCIx_CDA, MCDAy to HSMCIx_DAy.
2. I: Input, O: Output, PP: Push/Pull, OD: Open Drain.
34.6 Product Dependencies
34.6.1 I/O Lines
The pins used for interfacing the High Speed MultiMedia Cards or SD Cards are multiplexed with PIO lines. The
programmer must first program the PIO controllers to assign the peripheral functions to HSMCI pins.
programmer must first program the PIO controllers to assign the peripheral functions to HSMCI pins.
34.6.2 Power Management
The HSMCI is clocked through the Power Management Controller (PMC), so the programmer must first configure the
PMC to enable the HSMCI clock.
PMC to enable the HSMCI clock.
Table 34-1. I/O Lines Description for 4-bit Configuration
Pin Name
Pin Description
Type
Comments
MCCDA
Command/response
I/O/PP/OD
CMD of an MMC or SDCard/SDIO
MCCK
Clock
I/O
CLK of an MMC or SD Card/SDIO
MCDA0 - MCDA3
Data 0..3 of Slot A
I/O/PP
DAT[0..3] of an MMC
DAT[0..3] of an SD Card/SDIO
Table 34-2. I/O Lines
Instance
Signal
I/O Line
Peripheral
HSMCI0
MCI0_CDA
PA16
A
HSMCI0
MCI0_CK
PA17
A
HSMCI0
MCI0_DA0
PA15
A
HSMCI0
MCI0_DA1
PA18
A
HSMCI0
MCI0_DA2
PA19
A
HSMCI0
MCI0_DA3
PA20
A
HSMCI1
MCI1_CDA
PA12
B
HSMCI1
MCI1_CK
PA13
B
HSMCI1
MCI1_DA0
PA11
B
HSMCI1
MCI1_DA1
PA2
B
HSMCI1
MCI1_DA2
PA3
B
HSMCI1
MCI1_DA3
PA4
B