User manual
SAM9N12/CN11-EK User Guide 4-19
11186A–ATARM–29-Nov-12
4.3.22 PIO Usage
PIO A Pin Assignment
Table 4-3. PIO A Pin Assignment and Signal Descriptions
Signal Alternate Periph A Periph B Periph C
PA0 TXD0 SPI1_NPCS1 (LCD connector)
PA1 RXD0 SPI0_NPCS2
PA2 RTS0 ZB_IRQ 0
PA3 CTS0 ZB_IRQ 1
PA4 SCK0 One Wire
PA5 TXD1 ZB_RSTN
PA6 RXD1 ZB_SLPTR
PA7 TXD2 SPI0_NPCS1 MCI card detect
PA8 RXD2 SPI1_NPCS0 ZigBee
PA9 DRXD DBGU
PA10 DTXD DBGU
PA11 SPI0_MISO MCI_DA4 Serial DataFlash
PA12 SPI0_MOSI MCI_DA5 Serial DataFlash
PA13 SPI0_SPCK MCI_DA6 Serial DataFlash
PA14 SPI0_NPCS0 MCI_DA7 Serial DataFlash
PA15 MCI_ DA 0 MCI
PA16 MCI_CDA MCI
PA17 MCI_CK MCI
PA18 MCI_ DA 1 MCI
PA19 MCI_ DA 2 MCI
PA20 MCI_ DA 3 MCI
PA21 TIOA0 SPI1_MISO ZigBee
PA22 TIOA1 SPI1_MOSI ZigBee
PA23 TIOA2 SPI1_SPCK ZigBee
PA24 TCLK0 TK Audio
PA25 TCLK1 TF Audio
PA26 TCLK2 TD Audio
PA27 TIOB0 RD Audio
PA28 TIOB1 RK Audio
PA29 TIOB2 RF Audio
PA30 TWD0 SPI1_NPCS3 Audio & LCD connector
PA31 TWCK0 SPI1_NPCS2 Audio & LCD connector