Atmel SAM4S Series, Preliminary Data Sheet

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862
11100B–ATARM–31-Jul-12
SAM4S Series [Preliminary]
36.6 Product Dependencies
36.6.1 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.
36.6.2 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.
36.6.3 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.
36.7 Bus Topology
Figure 36-3. High Speed MultiMedia Memory Card Bus Topology
Table 36-2. 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 36-3. Peripheral IDs
Instance ID
HSMCI 18
2 3 4 5 6 1 7
MMC
9 1011 1213 8