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Board Description
AT91SAM9RL-EK Evaluation Board User Guide
3-7
6325A–ATARM–08-Jan-08
3.14
PIO Usage
Table 3-1. PIO Controller A
I/O Line
Peripheral A
Peripheral B
Application Usage
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PA0
MC_DA0
SD/MMC CARD READER
MC_DA0
VDDIOP
PA1
MC_CDA
SD/MMC CARD READER
MC_CDA
VDDIOP
PA2
MC_CK
SD/MMC CARD READER
MC_CK
VDDIOP
PA3
MC_DA1
TCLK0
SD/MMC CARD READER
MC_DA1
VDDIOP
PA4
MC_DA2
TIOA0
SD/MMC CARD READER
MC_DA2
VDDIOP
PA5
MC_DA3
TIOB0
SD/MMC CARD READER
MC_DA3
VDDIOP
PA6
TXD0
RS232 COM PORT
TXD0
VDDIOP
PA7
RXD0
RS232 COM PORT
RXD0
VDDIOP
PA8
SCK0
RF1
USB DEVICE
PA8 as USB_CNX
VDDIOP
PA9
RTS0
RK1
RS232 COM PORT
RTS0
VDDIOP
PA10
CTS0
RK0
RS232 COM PORT
CTS0
VDDIOP
PA11
TXD1
VDDIOP
PA12
RXD1
VDDIOP
PA13
TXD2
TD1
VDDIOP
PA14
RXD2
RD1
VDDIOP
PA15
TD0
SD/MMC CARD READER
PA15 as MCI_CD
VDDIOP
PA16
RD0
VDDIOP
PA17
AD0
TOUCH SCREEN PANEL
AD0_XR
VDDIOP
PA18
AD1
RTS1
TOUCH SCREEN PANEL
AD1_XL
VDDIOP
PA19
AD2
CTS1
TOUCH SCREEN PANEL
AD2_YT
VDDIOP
PA20
AD3
SCK3
TOUCH SCREEN PANEL
AD3_YB
VDDIOP
PA21
DRXD
SERIAL DEBUG PORT
DRXD
VDDIOP
PA22
DTXD
RF0
SERIAL DEBUG PORT
DTXD
VDDIOP
PA23
TWD0
I2C MEMORY
TWD0
VDDIOP
PA24
TWCK0
I2C MEMORY
TWCK0
VDDIOP
PA25
MISO
DATAFLASH DEVICE
MISO
VDDIOP
PA26
MOSI
DATAFLASH DEVICE
MOSI
VDDIOP
PA27
SPCK
DATAFLASH DEVICE
SPCK
VDDIOP
PA28
NPCS0
DATAFLASH DEVICE
NPCS0
VDDIOP
PA29
RTS2
TF1
VDDIOP
PA30
CTS2
TK1
VDDIOP
PA31
NWAIT
IRQ
VDDIOP