3.4.9 RPi 40-Pin GPIO Interface
The board features a 40-pin connector (RPi compatible) for free use.
| Signal | Pin No. | Pin No. | Signal |
|---|---|---|---|
|
VDD_3V3 |
1 |
2 |
5V_MAIN |
|
RPI_TWD_PC7 |
3 |
4 |
5V_MAIN |
|
RPI_TWCK_PC6 |
5 |
6 |
GND |
|
RPI_GPCLK0_PB31 |
7 |
8 |
RPI _TXD_PA24 |
|
GND |
9 |
10 |
RPI _RXD_PA23 |
|
RPI_GPIO17_PC3 |
11 |
12 |
RPI_I2S_CK_PC16 |
|
RPI_GPIO27_PC4 |
13 |
14 |
GND |
|
RPI_GPIO22_PD1 |
15 |
16 |
RPI_GPIO23_PD2 |
|
VDD_3V3 |
17 |
18 |
RPI_GPIO24_PC12 |
|
RPI_MOSI_PA18 |
19 |
20 |
GND |
|
RPI_MISO_PA17 |
21 |
22 |
RPI_GPIO25_PC11 |
|
RPI_SCK_PA16 |
23 |
24 |
RPI_NPCS0_PA19 |
|
GND |
25 |
26 |
RPI_NPCS1_PA20 |
|
– |
27 |
28 |
– |
|
RPI_GPCLK1_PD20 |
29 |
30 |
GND |
|
RPI_GPCLK2_PC0 |
31 |
32 |
RPI_PWM0_PB15 |
|
RPI_PWM1_PB17 |
33 |
34 |
GND |
|
RPI_I2S_WS_PC15 |
35 |
36 |
RPI_GPIO16_PC18 |
|
RPI_GPIO26_PC19 |
37 |
38 |
RPI_I2S_DIN0_PC14 |
|
GND |
39 |
40 |
RPI_I2S_DOUT0_PC17 |
In addition to the standard interfaces assigned on the 40-pin connector, alternate functions are available on certain pins. See the table below.
| Signal | PIO | Pin No. | Alternate Function | IOset |
|---|---|---|---|---|
| RPI_GPIO24_PC12 | PC12 | 18 | PDMC1_CLK | 1 |
| RPI_GPIO25_PC11 | PC11 | 22 | PDMC1_DS0 | 1 |
| RPI_RXD_PA23 | PA23 | 10 | PDMC0_CLK | 1 |
| RPI_TXD_PA24 | PA24 | 8 | PDMC0_DS0 | 1 |
| RPI_GPIO17_PC3 | PC3 | 11 | SPDIF_RX | 2 |
| RPI_GPIO27_PC4 | PC4 | 13 | SPDIF_TX | 2 |