3.4.5 RPi Connector Interface

The SAMA7G54-EK board features a 40-pin connector (Raspberry Pi compatible) for free use.

Figure 3-42. RPi 40-Pin Connector Schematic
Table 3-34. RPi Connector Pin Assignment
Pin No.RPi SignalSignal NameShared WithPIOFunction
13.3V powerVDD_3V33.3V power supply
25V power5V_MAIN5.0V power supply
3GPIO 2 (SDA)EXT40_TWD_PC18mBUS1, mBUS2PC183I²C data line
45V power5V_MAIN5.0V power supply
5GPIO 3 (SCL)EXT40_TWCK_PC19mBUS1, mBUS2PC193I²C clock line
6GroundGNDGround
7GPIO 4 (GPCLK0)EXT_GPIO_PD2610/100 EthernetPD262GPIO clock
8GPIO 14 (TXD)EXT40_TXD_PC30PC30UART TXD
9GroundGNDGround
10GPIO 15 (RXD)EXT40_RXD_PC31PC31UART RXD
11GPIO 17EXT40_SPI1_CE1_PE7USART WILC3000PE71GPIO standard
12GPIO 18 (PCM_CLK)EXT_SPI1_CE0_PE6USART WILC3000PE61GPIO standard PWM
13GPIO 27EXT_GPIO_PD2110/100 EthernetPD212GPIO standard
14GroundGNDGround
15GPIO 22EXT_GPIO_PD2710/100 EthernetPD272GPIO standard
16GPIO 23EXT40_GPIO_PD2510/100 EthernetPD252GPIO standard
173.3V powerVDD_3V33.3V power supply
18GPIO 24EXT_GPIO_PB8Red LEDPB8GPIO standard
19GPIO 10 (MOSI)EXT40_QSPI1_IO2_PB23PB23SPI MOSI
20GroundGNDGround
21GPIO 9 (MISO)EXT40_QSPI1_IO1_PB24PB24SPI MISO
22GPIO 25EXT40_QSPI1_IO3_PB22PB22GPIO standard
23GPIO 11 (SCLK)EXT40_QSPI1_IO0_PB25PB25SPI clock
24GPIO 8 (CE0)EXT40_QSPI1_CS_PB26PB26SPI Chip Select 0
25GroundGNDGround
26GPIO 7 (CE1)EXT40_QSPI1_SCK_PB27PB27SPI Chip Select 1
27GPIO 0 (ID_SD)NCI²C ID EEPROM data line
28GPIO 1 (ID_SC)NCI²C ID EEPROM clock line
29GPIO 5EXT40_GPIO_PD3010/100 EthernetPD302GPIO standard "clock"
30GroundGNDGround
31GPIO 6EXT40_GPIO_PD2910/100 EthernetPD292GPIO standard "clock"
32GPIO 12 (PWM0)EXT40_PWM0_PE2MIPI CSI cameraPE2GPIO standard PWM
33GPIO 13 (PWM1)EXT40_PWM1_PD2810/100 EthernetPD282GPIO standard PWM
34GroundGNDGround
35GPIO 19 (PCM_FS)EXT40_SPI1_MISO_PE4USART WILC3000PE41GPIO standard SPI MISO
36GPIO 16EXT40_SPI1_CE2_PE1MIPI CSI cameraPE1GPIO standard
37GPIO 26EXT40_GPIO_PD31PD31GPIO standard
38GPIO 20 (PCM_DIN)EXT40_SPI1_MOSI_PE3USART WILC3000PE31GPIO standard SPI MOSI
39GroundGNDGround
40GPIO 21 (PCM_DOUT)EXT40_SPI1_SCLK_PE5PE5GPIO standard SPI CLK
Note:
  1. These I/Os are shared with the USART of the (optional) WILC3000 module for its Bluetooth functionality. The two interfaces cannot work together and the user should pay particular attention to impedance adaptation on each node. The series resistor can be removed to improve behavior.
  2. These I/Os are shared with the GMAC interface of the KSZ8081 (Ethernet 10/100) interface. The user should pay particular attention to impedance adaptation on each node. The series resistor can be removed to improve behavior.
  3. This interface is shared with the mikroBUS1 and mikroBUS2 interfaces. The end user must pay attention to the I²C addresses used on these nodes.