3.2.6.6.4 Shared GPIO Resources

The SAMA7G54-EK embeds several GPIOs shared between two devices/interfaces.

The schematic below describes the sharing information.

Figure 3-26. GPIO Sharing Schematic
Table 3-13. GPIO Assignements
PIOMPU Net NameDevice Net NameFunction
PA13PA13LED_GREEN_PA13Green LED control in PWM mode
MIKROBUS1_PWM_PA13mikroBUS 1 PWM control
PB8PB8LED_RED_PB8Red LED control in GPIO mode
EXT40_GPIO_PB8RPi 40-pin connector GPIO
PD20PD20LED_BLUE_PD20Blue LED control in PWM mode
MIKROBUS2_PWM_PD20mikroBUS 2 PWM control
PD21PD21ETH1_TXEN_PD21Ethernet 10/100 transmit enable
EXT40_GPIO_PD21RPi 40-pin connector GPIO
PD25PD25ETH1_RX0_PD25Ethernet 10/100 receive data line 0
EXT40_GPIO_PD25RPi 40-pin connector GPIO
PD26PD26ETH1_RX1_PD26Ethernet 10/100 receive data line 1
EXT40_GPIO_PD26RPi 40-pin connector GPIO
PD27PD27ETH1_RXER_PD27Ethernet 10/100 receive error
EXT40_GPIO_PD27RPi 40-pin connector GPIO
PD28PD28ETH1_MDC_PD28Ethernet 10/100 management data clock
EXT40_PWM1_PD28RPi 40-pin connector GPIO
PD29PD29ETH1_MDIO_PD29Ethernet 10/100 management data input/output
EXT40_GPIO_PD29RPi 40-pin connector GPIO
PD30PD30ETH1_TXCK_PD30Ethernet 10/100 transmit clock or 50 MHz reference clock
EXT40_GPIO_PD30RPi 40-pin connector GPIO
PE1PE1EXT40_SPI1_CE2_PE1RPi 40-pin connector SPI chip enable 2
CAM_GPIO0_PE1RPi CSI camera GPIO
PE2PE2EXT40_PWM0_PE2RPi 40-pin connector PWM signal in PWM mode
CAM_GPIO1_PE2RPi CSI camera GPIO