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NVIDIA Jetson Xavier NX GPIO Header Pinout

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 GPIONamePinPinNameSysfs 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
Jetson Xavier NX – Pin 1 is on the outside edge

Notes

Last update 7-25-20