Atmel SAM9X25, Manual

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11054A–ATARM–27-Jul-11
SAM9X25
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 func-
tions 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.
34.6.3 Interrupt
The HSMCI interface has an interrupt line connected to the Advanced Interrupt Controller (AIC).
Handling the HSMCI interrupt requires programming the AIC before configuring the HSMCI.
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
Table 34-3. Peripheral IDs
Instance ID
HSMCI0 12
HSMCI1 26