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No I2C signal from ADV7280m Evaluation Board

Question asked by Christoph1433 on Apr 27, 2018
Latest reply on Apr 30, 2018 by Christoph1433

Hi,

 

I am trying to connect an Nvidia Jetson TX1 to a EVAl-ADV7280M using I2C. The video decoder is connected to 1.8V logic on the Jetson, so I added a logic level converter to get it from 1.8V to 3.3V. The Jetson is not recognizing the ADV with id 0x42. As a test I connected an IMU the same way and it comes up without any issues. I also probed the lines and I can see the jetson checking for devices, when I use i2cdetect. It seems like for some reason the Evaluation Board does not respond or the I2C is not up in the first place. I swapped SDA/SCL lines to make sure I am not doing a silly mistake.

 

Is there anything I am missing? Should the I2C be on automatically or do I have to change the configuration of the ADV7280M Eval Kit?

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