Table 4-2. Extension Header EXT3
Pin on EXT3
SAM G55 pin
SAM G55 Shared
Functionality
Shared Functionality
1 [ID]
-
-
Communication line to ID chip on
extension board.
2 [GND]
-
-
GND
3 [ADC(+)]
PA19
AD2
4 [ADC(-)]
PA20
AD3
5 [GPIO1]
PA30
GPIO
6 [GPIO2]
PB15
GPIO
7 [PWM(+)]
PA01
TIOB0
8 [PWM(-)]
PB13
GPIO
9 [IRQ/GPIO]
PB03
WKUP13
10 [SPI_SS_B/GPIO]
PA15
GPIO
11 [TWI_SDA]
PB08
TWD4
12 [TWI_SCL]
PB09
TWCK4
13 [USART_RX]
PB01
USART6 RXD
EDBG (DGI USART)
14 [USART_TX]
PB00
USART0 TXD
EDBG (DGI USART)
15 [SPI_SS_A]
PA05
SPI NPCS1
16 [SPI_MOSI]
PA13
SPI MOSI
EXT1 connector (SPI MOSI)
17 [SPI_MISO]
PA12
SPI MISO
EXT1 connector (SPI MISO)
18 [SPI_SCK]
PA14
SPI SCK
EXT1 connector (SPI SCK)
19 [GND]
-
-
GND
20 [VCC]
-
-
VCC
Table 4-3. Extension Header EXT4
Pin on EXT4
SAM G55 pin
SAM G55 Peripheral
Function
Shared Functionality
1 [ID]
-
-
Communication line to ID chip on
extension board.
2 [GND]
-
-
GND
3 [ADC(+)]
-
-
4 [ADC(-)]
-
-
5 [GPIO1]
PA31
GPIO
PCK2
6 [GPIO2]
-
-
7 [PWM(+)]
-
-
Atmel SAM G55 Xplained Pro [USER GUIDE]
Atmel-42389B-SAM-G55-Xplained-Pro_User Guide-04/2016
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