Datasheet

564
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
35.6 Product Dependencies
35.6.1 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.
35.6.2 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.
35.6.3 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.
35.7 Bus Topology
Figure 35-3. High Speed MultiMedia Memory Card Bus Topology
Table 35-2. I/O Lines
Instance Signal I/O Line Peripheral
HSMCI MCCDA PA16 A
HSMCI MCCK PA17 A
HSMCI MCDA0 PA15 A
HSMCI MCDA1 PA18 A
HSMCI MCDA2 PA19 A
HSMCI MCDA3 PA20 A
HSMCI MCDA4 PA11 B
HSMCI MCDA5 PA12 B
HSMCI MCDA6 PA13 B
HSMCI MCDA7 PA14 B
Table 35-3. Peripheral IDs
Instance ID
HSMCI 12
2345617
MMC
91011 12138