Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
885
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
38.6
Product Dependencies
38.6.1 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.
38.6.2 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.
38.6.3 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.
Handling the HSMCI interrupt requires programming the interrupt controller before configuring the HSMCI.
38.7
Bus Topology
Figure 38-3.
High Speed MultiMedia Memory Card Bus Topology
Table 38-2.
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 38-3.
Peripheral IDs
Instance
ID
HSMCI
18
2 3 4 5 6
1
7
MMC
9 10 11
1213 8