Datasheet

549
SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
34.5 Pin Name List
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, MCDAy to
MCIx_DAy.
34.6 Product Dependencies
34.6.1 I/O Lines
The pins used for interfacing the MultiMedia Cards or SD Cards may be multiplexed with PIO lines. The
programmer must first program the PIO controllers to assign the peripheral functions to MCI pins.
34.6.2 Power Management
The MCI may be clocked through the Power Management Controller (PMC), so the programmer must first
configure the PMC to enable the MCI clock.
34.6.3 Interrupt
The MCI interface has an interrupt line connected to the Advanced Interrupt Controller (AIC).
Handling the MCI interrupt requires programming the AIC before configuring the MCI.
Table 34-1. I/O Lines Description
Pin Name
(2)
Pin Description Type
(1)
Comments
MCCDA Command/response I/O/PP/OD CMD of an MMC or SDCard
MCCK Clock I/O CLK of an MMC or SD Card
MCDA0–MCDA3 Data 0..3 of Slot A I/O/PP
DAT0 of an MMC
DAT[0..3] of an SD Card