Hello! I'm a camera engineer for automobiles.
Currently, we would like to control I2C using TS3A24159.
However, when the serializer's GPIO7,8 connected to the IN pin of TS3A24159 is operated, the I2C communication error and serializer are turned off.
I share the conditions I tested. Please check what additional debugging points are there.
Please refer to the attached circuit.
1. When U5 and U4 are separated (R7 and R9 removed), I2C is detected in D1 and D3 pins of U5, and serializer operates normally.
2. Even if the pull-up resistors R38, R39, R37, and R40 of the U4 are removed, I2C is not operated and the serializer is turned off.
3. Even if the pull-up resistors R38, R39, R37, R40, R19, R20, R25, and R35 of U3 and U4 are removed, I2C is not operated and the serializer is turned off.
4. When TS3A24159 is completely removed, it is confirmed that GPIO 7 and 8 of the serializer operate normally.
Thank you!