Nvidia JETSON XAVIER NX Design Guide

NVIDIA Jetson Xavier NX DG-09693-001_v1.7 | 67
Chapter 12. Miscellaneous Interfaces
12.1 I2C
Jetson Xavier NX brings four I2C interfaces to the connector pins. CAM_I2C is included in the
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
Pin #
Module
Pin Name
Xavier Signal Usage/Description
Recommended
Usage
Direction Pin Type
185 I2C0_SCL GEN2_I2C_SCL
General I2C 0 Clock. 2.2kΩ pull-up to 3.3V on
module.
I2C (general) Bidir
Open Drain –
3.3V
187 I2C0_SDA GEN2_I2C_SDA
General I2C 0 Data. 2.2kΩ pull-up to 3.3V on
the module.
Open Drain –
3.3V
189 I2C1_SCL DP_AUX_CH3_P
General I2C 1 Clock. 2.2kΩ pull-up to 3.3V on
the module.
Open Drain –
3.3V
191 I2C1_SDA DP_AUX_CH3_N
General I2C 1 Data. 2.2kΩ pull-up to 3.3V on
the module.
Open Drain –
3.3V
232 I2C2_SCL GEN1_I2C_SCL
General I2C 2 Clock. 2.2kΩ pull-up to 1.8V on
the module.
Open Drain –
1.8V
234 I2C2_SDA GEN1_I2C_SDA
General I2C 2 Data. 2.2kΩ pull-up to 1.8V on
the module.
Open Drain –
1.8V
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 Specifications

General

Storage	16 GB eMMC 5.1
AI Performance	21 TOPS (INT8)
Operating Temperature	-25°C to 80°C
Operating System	Linux (JetPack SDK)
GPU	NVIDIA Volta architecture with 384 CUDA cores and 48 Tensor cores
CPU	6-core NVIDIA Carmel ARMv8.2 64-bit CPU 6 MB L2 + 4 MB L3
Memory	8GB 128-bit LPDDR4x
Video Decode	2x 4K60 | 4x 4K30 | 8x 1080p60 | 16x 1080p30 (H.265/H.264)
Camera	Up to 6 cameras
Connectivity	Gigabit Ethernet, M.2 Key E for Wi-Fi/Bluetooth
Power	10 W / 15 W / 20 W
Dimensions	70mm x 45mm