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Chapter 11. Miscellaneous Interfaces
11.1
I2C
Jetson TX2 NX brings four I2C interfaces to the connector pins. CAM_I2C is included in Table
8-2. The assignments in the I2C interface mapping table should be used where applicable for
the I2C interfaces.
Table 11-1.
Jetson TX2 NX I2C Pin Description
Pin #
Module Pin Name Tegra X2 Signal
185
I2C0_SCL
GEN1_I2C_SCL
187
I2C0_SDA
GEN1_I2C_SDA
GPIO_SEN8
189
I2C1_SCL
GPIO_SEN9
191
I2C1_SDA
232
I2C2_SCL
GEN8_I2C_SCL
234
I2C2_SDA
GEN8_I2C_SDA
Notes: In the Type/Dir column, Output is from Jetson TX2 NX. Input is to Jetson TX2 NX. Bidir is for Bidirectional signals.
NVIDIA Jetson TX2 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.
Usage on DevKit
Direction
Carrier Board
I2C (general)
Bidir
DG-10141-001_v1.1 | 57
Pin Type
Open Drain –
3.3V
Open Drain –
3.3V
Open Drain –
3.3V
Open Drain –
3.3V
Open Drain –
1.8V
Open Drain –
1.8V
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