I’m using a Jetson Tx2 on a custom carrier board, I’ve build several of this boards, following the OEM Guide. Almost all board works fine.
Only one board is give me the following problem:
I powered up the board with 12 V on the main supply.
I check the 12 V voltage with a microcontroller and as it reach the nominal voltage level it assert the VIN_PWR_BAD# which is pulled up inside the module to 5V, this pins work fine, I measured the voltage.
The boards implements the power-up procedure correctly, it’s been tested on other board.
According to the guide, the voltage of the POWER_BTN# pin should going high to 5V 8.8 ms after supplying the main voltage to the Jetson but it stays always 0 V. The mosfet swich is working high, there’s no voltage on the pin.
I’m 100% sure that the microcontroller doesn’t drive the POWER_BTN# low, I’ve removed the mos leaving everything unconnected and I have no voltage on the POWER_BTN# pin (B50) so I can’t drive it low to boot the jetson
The module is working fine on other boards so it’s a carrier board related/tx2 carrier-module interation.
The RESET_OUT# pin is keeped low from the carrier board as expected, same as all the voltages of the board (including 1v8)
Which other pins should I check that might prevent the POWER BTN# from going high other than pins in Figure 8? any peripherals or method to debug the power section of the Tx2? Any Ideas?
Thank you in advance