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7 Developer Guide

7.7 I2C Interface

The device provides one I2C bus interface that supports 3.3 V levels (open drain; a 1.5K pull up resistor is installed inside the device). It also supports a 3.3 V external powe…

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The device provides one I2C bus interface that supports 3.3 V levels (open-drain; a 1.5K pull-up resistor is installed inside the device). It also supports a 3.3 V external power output with a current of less than 1 A. The interface pin definition is shown below.

PIN1 PIN2 PIN3 PIN4
3V3 SCL SDA GND

I2C Test

Test Equipment

Power adapter, Orin main unit, and AW2013 daughterboard.

Test Objective

Test the functionality of the I2C circuit path.

Test Procedure

  1. Connect the AW2013 daughterboard to the I2C interface.

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  1. Enter the following command to become the superuser.
sudo su
  1. Enter the following command to check whether the device is detected.
i2cdetect -r -y 7 | grep 45

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  1. The AW2013 daughterboard above can be replaced with another I2C device board. If you replace it, change the address in the command as follows:
i2cdetect -r -y 7 | grep address