Chapter 12. Miscellaneous Interfaces; Table 12-1. I2C Pin Descriptions - Nvidia Jetson Xavier NX Design Manual

Chapter 12. Miscellaneous Interfaces

12.1 I2C
Jetson Xavier NX brings four I2C interfaces to the connector pins.
camera pin description table earlier in this design guide. The assignments in the "I2C Interface
Mapping" table should be used where applicable for the I2C interfaces.

Table 12-1. I2C Pin Descriptions

Module
Pin # Xavier Signal
Pin Name
185 I2C0_SCL GEN2_I2C_SCL
187 I2C0_SDA GEN2_I2C_SDA
189 I2C1_SCL DP_AUX_CH3_P
191 I2C1_SDA DP_AUX_CH3_N
232 I2C2_SCL GEN1_I2C_SCL
234 I2C2_SDA GEN1_I2C_SDA
Notes: In the Type/Dir column, Output is from Jetson Xavier NX. Input is to Jetson Xavier NX. Bidir is for Bidirectional signals.
NVIDIA Jetson Xavier NX
Usage/Description
General I2C 0 Clock. 2.2kΩ pull-up to 3.3V on
module.
General I2C 0 Data. 2.2kΩ pull-up to 3.3V on
the module.
General I2C 1 Clock. 2.2kΩ pull-up to 3.3V on
the module.
General I2C 1 Data. 2.2kΩ pull-up to 3.3V on
the module.
General I2C 2 Clock. 2.2kΩ pull-up to 1.8V on
the module.
General I2C 2 Data. 2.2kΩ pull-up to 1.8V on
the module.
is included in the
CAM_I2C
Recommended
Direction Pin Type
Usage
I2C (general) Bidir
DG-09693-001_v1.7 | 67
Open Drain –
3.3V
Open Drain –
3.3V
Open Drain –
3.3V
Open Drain –
3.3V
Open Drain –
1.8V
Open Drain –
1.8V