Hello,
I’m using a Jetson Orin AGX Industrial Module with a custom carrierboard.
I’m facing issues to make it power-on correctly:
To do so, I need to manually pull the VDDIN_PWR_BAD_N directly to the 5V of the module (SYS_VIN_MV).
If I let the signal “open”, it never goes high and stay at about 0,1V eventough the SYS_VIN_HV is high and stable.
I tried to add a PU resistor of different values but the signal is never going high enough.. (2,1V with a 1k PU).
I decided to measure with a multimeter the impedance value between this signal (pin L55) and the 5V of the module : I get the correct value of the documentation of 10k.
But my measure between this signal and GND gives about19k !
I precise that I did these measurements both with the module plugged on the carrierboard and not plugged in.
→ Same measurements.
I did the measurements on another brand new module → Same measurements.
What are your toughts on this ?
Thanks in advance for the help.
Romain
Please refer to the Jetson AGX Orin Series Modules Design Guide
Hi @sgursal,
As you may imagine, I already checked this Design Guide where it’s clearly specified that there is a 10K PU to 5V on module which doesn’t match well with the measurements I made neither with the functionnal behaviour I encounter.
Could you help me more, please ?
Please check your power sequencing and provide scope shots with the power up sequence.
Jetson AGX Orin Industrial needs SYS_VIN_SV. Is this provided and it should be the first to be powered up.
Yes, SYS_VIN_SV is provided in first. I’ll update you with scope shots of the power up sequence.
Can you please indicate what is the critical condition that makes the module to drive the VDDIN_PWR_BAD_N signal ?
Thanks
VIN_PWR_BAD# signal is generated by the Carrier Board and passed to the module to keep the Tegra processor powered off until the VDD_IN supply is stable and it is possible to power up any standby circuits on the module. This signal prevents the Tegra processor from powering up prematurely before the Carrier Board has charged up its decoupling capacitors and power to the module is stable
I mean this critical condition:
Could you isolate the signal from being driven from the carrier board and then check if this signal goes high (on the module side) with the internal module pull up resistor?
Could you provide the scope capture/s of power up sequence on your carrier board? Also, did you check if same Jetson Orin AGX Industrial Module works with Nvidia carrier board?
I’ll do that but could you answer my question about the critical condition ?
Critical conditions are like main power rails are not powered on including SYS_VIN_SV (3V3) and temperature triggered shutdown. Are you using heatsink/thermal solution during your testing?
Anything else ?
Because yes I use a heatsink with a fan on top of it so temp is quite cool.
Also, I provide all the power rails including SYS_VIN_SV.
Is the module flashed already and what is the software version flashed? Might be good to first test it on our carrier board. Is UART connected and do you get any logs on the console output?
Have you used the different board config for the AGX Orin Industrial module?
They should use different board config as following to flash.
AGX Orin: jetson-agx-orin-devkit.conf → p3737-0000-p3701-0000.conf
AGX Orin Industial: jetson-agx-orin-devkit-industrial.conf → p3737-0000-p3701-0008.conf
We only have the industrial module so we used :
jetson-agx-orin-devkit-industrial.conf → p3737-0000-p3701-0008.conf
The module was not flashed. It was a blank module just out of factory.
Then I forced this signal in order to make the module operationnal and I flashed it with jetson-agx-orin-devkit-industrial.conf → p3737-0000-p3701-0008.conf
The module is then flashed correctly and boot is ok but still with the signal VDDIN_PWR_BAD_N forced to 5V.
UART is connected and gives classic log and control access to module.
What is your carrier board you talking about ? I have some Orin Devkit but no other carrier board and I don’t think that Industrial AGX module can plug into the Orin Devkit.
Regards,
Could you help send picture of you AGX Industrial module with top/bottom and include the 2D barcode/serial number of the module. Jetson AGX Orin Industrial Module is the same form factor as the Jetson AGX Orin Module. Orin Devkit is what I did refer to as our carrier board. Please provide complete boot logs for review
Pictures:
Code ECC200 :1612523110361,48B02DF1C33C,10,699-13701-0008-500
About the devkit Orin, do you have a notice document on how to replace the module inside the devkit ?
I’ll post the boot log in a next message.
