Jetson Xavier NX GPIO Header J12 PINOUT
By default, I2C and UART pins are assigned. All other pins (except power and ground) are assigned as GPIO. Pins labeled with other functions below are suggested functions.
| Sysfs GPIO | Name | Pin | Pin | Name | Sysfs GPIO |
|---|---|---|---|---|---|
| Jetson Xavier NX J12 Header | |||||
| 3.3 VDC Power | 1 | 2 | 5.0 VDC Power | ||
| I2C1_SDA I2C Bus 8 | 3 | 4 | 5.0 VDC Power | ||
| I2C1_SCL I2C Bus 8 | 5 | 6 | GND | ||
| 148 gpio436 | GPIO9 AUDIO_MCLK | 7 | 8 | UART1_TX /dev/ttyTHS0 | |
| GND | 9 | 10 | UART1_RX /dev/ttyTHS0 | ||
| 140 gpio428 | UART1_RTS | 11 | 12 | I2S0_SCLK | 157 gpio445 |
| 192 gpio480 | SPI1_SCK | 13 | 14 | GND | |
| 20 gpio268 | GPIO12 Alt: PWM | 15 | 16 | SPI1_CS1 | 196 gpio484 |
| 3.3 VDC Power | 17 | 18 | SPI1_CS0 | 195 gpio483 | |
| 205 gpio493 | SPI0_MOSI | 19 | 20 | GND | |
| 204 gpio492 | SPI0_MISO | 21 | 22 | SPI1_MISO | 193 gpio481 |
| 203 gpio491 | SPI0_SCK | 23 | 24 | SPI0_CS0 | 206 gpio494 |
| GND | 25 | 26 | SPI0_CS1 | 207 gpio495 | |
| I2C0_SDA I2C Bus 1 | 27 | 28 | I2C0_SCL I2C Bus 1 | ||
| 133 gpio421 | GPIO01 | 29 | 30 | GND | |
| 134 gpio422 | GPIO11 | 31 | 32 | GPIO07 Alt: PWM | 136 gpio424 |
| 105 gpio393 | GPIO13 Alt: PWM | 33 | 34 | GND | |
| 160 gpio448 | I2S0_FS | 35 | 36 | UART1_CTS | 141 gpio429 |
| 194 gpio482 | SPI1_MOSI | 37 | 38 | I2S0_SDIN | 159 gpio447 |
| GND | 39 | 40 | I2S0_SDOUT | 158 gpio446 | |
Notes
Last update 7-25-20
- 7-25-2020
- Added the gpiochip-specific offset to sysfs gpio number
- First number is the GPIO number within a GPIO controller
- Second ( gpioXXXX ) is the global Linux GPIO number
- 6-16-2020 – Preliminary.
- Pin 32 – When configured as PWM:
- PWM chip sysfs directory: /sys/devices/32f0000.pwm
- PWM ID within PWM chip: 0
- Pin 33 – When configured as PWM:
- PWM chip sysfs directory: /sys/devices/3280000.pwm
- PWM ID within PWM chip: 0