Jetson AGX Xavier Series Product DG-09840-001_v2.5 | 103
Chapter 13. Miscellaneous Interfaces
13.1 I2C
The SoC has nine I2C controllers. Jetson AGX Xavier brings eight of the I2C interfaces out,
which are shown in the following tables. The assignments in Table 13-2 should be used for the
I2C interfaces:
Table 13-1. Jetson AGX Xavier I2C Pin Description
Pin #
Module Pin
Name
SoC Signal Usage/Description
Usage on NVIDIA
Carrier Board
Direction
Pin Type
K5 I2C1_CLK GEN1_I2C_SCL General I2C 1 Clock
ID EEPROM
Bidir
Open-Drain – 1.8V
L8 I2C1_DAT GEN1_I2C_SDA General I2C 1 Data
J61 I2C2_CLK GEN2_I2C_SCL General I2C 2 Clock
Various
K61 I2C2_DAT GEN2_I2C_SDA General I2C 2 Data
Camera Connector
E53 I2C3_DAT CAM_I2C_SDA General I2C 3 Data
D61 I2C4_CLK GEN8_I2C_SCL General I2C 4 Clock
Audio Codec and Camera
Connector
E60 I2C4_DAT GEN8_I2C_SDA General I2C 4 Data
A53 I2C5_CLK DP_AUX_CH3_P General I2C 5 Clock
Expansion Connector
C53 I2C5_DAT DP_AUX_CH3_N General I2C 5 Data
F51 DP0_AUX_CH_N DP_AUX_CH0_N DisplayPort 0 Aux– or HDMI DDC SDA
USB Type C Conn. J512
(via Alt Mode Switch)
AC-Coupled on
Carrier Board
(eDP/DP) or Open-
Drain, 1.8V (3.3V
tolerant - DDC/I2C)
F52 DP0_AUX_CH_P DP_AUX_CH0_P DisplayPort 0 Aux+ or HDMI DDC SCL
J53 DP1_AUX_CH_N DP_AUX_CH1_N DisplayPort 1 Aux– or HDMI DDC SDA
USB Type C Conn. J513
(via Alt Mode Switch)
J52 DP1_AUX_CH_P DP_AUX_CH1_P DisplayPort 1 Aux+ or HDMI DDC SCL
G54 DP2_AUX_CH_N DP_AUX_CH2_N DisplayPort 2 Aux– or HDMI DDC SDA
HDMI Connector
G53 DP2_AUX_CH_P DP_AUX_CH2_P DisplayPort 2 Aux+ or HDMI DDC SCL
Notes:
1. In the Type/Dir column, Output is from Jetson AGX Xavier. Input is to Jetson AGX Xavier. Bidir is for Bidirectional signals.
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