Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos
Los códigos de productos
ATSAM4S-XPLD
811
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
37.5
Pin Name List
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.
37.6
Product Dependencies
37.6.1 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.
37.6.2 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.
37.6.3 Interrupt
The HSMCI interface has an interrupt line connected to the interrupt controller.
Handling the HSMCI interrupt requires programming the interrupt controller before configuring the HSMCI.
Table 37-1. I/O Lines Description for 4-bit Configuration
Pin Name
Pin Description
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 37-2. I/O Lines
Instance
Signal
I/O Line
Peripheral
HSMCI
MCCDA
PA28
C
HSMCI
MCCK
PA29
C
HSMCI
MCDA0
PA30
C
HSMCI
MCDA1
PA31
C
HSMCI
MCDA2
PA26
C
HSMCI
MCDA3
PA27
C
Table 37-3. Peripheral IDs
Instance
ID
HSMCI
18