Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
912
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 Nested Vector Interrupt Controller (NVIC).
Handling the HSMCI interrupt requires programming the NVIC before configuring the HSMCI.
Table 37-2. I/O Lines
Instance Signal I/O Line Peripheral
HSMCI MCCDA PA20 A
HSMCI MCCDB PE20 B
HSMCI MCCK PA19 A
HSMCI MCDA0 PA21 A
HSMCI MCDA1 PA22 A
HSMCI MCDA2 PA23 A
HSMCI MCDA3 PA24 A
HSMCI MCDA4 PD0 B
HSMCI MCDA5 PD1 B
HSMCI MCDA6 PD2 B
HSMCI MCDA7 PD3 B
HSMCI MCDB0 PE22 B
HSMCI MCDB1 PE24 B
HSMCI MCDB2 PE26 B
HSMCI MCDB3 PE27 B
Table 37-3. Peripheral IDs
Instance ID
HSMCI 21