Datasheet

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.
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.
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
(2)
Pin Description Type
(1)
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