TX2i Auto Power On

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi All !
I have designed a TX2i custom carrier board in order to provide 4 GbEth.
Refer to the OEM DG, I have a 0R resistor to GND on CHARGER_PRSNT#, and left POWER_BTN# pin unconnected. But the carrier board don’t auto power on, I should pressed the RESET_IN# button to power on.
The auto power on sequence is done, RESET_OUT# & RESET_IN# pin is high.
Anyone knows about that? Thanks in advance.

3

For Jetson TX2i, which uses a different PMIC (and does not have the circuitry on TX2 4GB to make it compatible to TX2), the POWER_BTN# pin needs to be held high. The TX2i PMIC has a level sensitive on input, so to power automatically when the main power is applied (Auto-Power-On), all that is required is for the POWER_BTN# pin to be pulled up. Since this pin is pulled up on the module, it can be left unconnected for Auto-Power-On to be supported.

4

Thanks for reply
Your meaning is unconnected the CHARGER_PRSNT# pin? I have also tried but it dosn’t work.

5

Did you check this topic? Auto-Power-On with C02 carrier board

6

Is the auto-power-on OK on your dev kit? What’s the difference between your design and dev kit carrier board?

7

The file is my design about TX2i power up.TX2i.zip (129.1 KB)

8

Please follow OEM DG to implement B04 power part design on the auto-power-on function of TX2i module.