I designed a carrier board with reference to the schematic diagram of Jetson TX2 B04, in which:
- The two-way power supply monitoring circuit of INA3221, but the power supply of VDD_M.2 is not monitored;
- Removed the U28 chip;
- U29 chip uses part of the output function; (the address is connected according to B04)
But now there is a problem:
- U29 chip has no output after booting;
- USB3.0 does not work after booting, and there is no voltage output on A18 pin.
I have 3 doubts to ask:
Will it affect I2C communication if I remove the U28 chip?
What factors affect the use of USB3.0?
What are the conditions for software enable (A18 output high level)?