Datasheet

599
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
32.5 Signal Description
32.6 Product Dependencies
32.6.1 I/O Lines
The pins used for interfacing the compliant external devices may be multiplexed with PIO lines. The programmer must
first program the PIO controllers to assign the SPI pins to their peripheral functions.
32.6.2 Power Management
The SPI may be clocked through the Power Management Controller (PMC), thus the programmer must first configure the
PMC to enable the SPI clock.
Table 32-1. Signal Description
Pin Name Pin Description Type
Master Slave
MISO Master In Slave Out Input Output
MOSI Master Out Slave In Output Input
SPCK Serial Clock Output Input
NPCS1-NPCS3 Peripheral Chip Selects Output Unused
NPCS0/NSS Peripheral Chip Select/Slave Select Output Input
Table 32-2. I/O Lines
Instance Signal I/O Line Peripheral
SPI MISO PA12 A
SPI MOSI PA13 A
SPI NPCS0 PA11 A
SPI NPCS1 PA9 B
SPI NPCS1 PA31 A
SPI NPCS1 PB14 A
SPI NPCS1 PC4 B
SPI NPCS2 PA10 B
SPI NPCS2 PA30 B
SPI NPCS2 PB2 B
SPI NPCS3 PA3 B
SPI NPCS3 PA5 B
SPI NPCS3 PA22 B
SPI SPCK PA14 A