Power-OFF to On Sequence case different from the design guide

[yhsong]

I’m making a custom carrier board using AGX Orin Industrial.

The button MCU was used for power booting, and the order of signals was referred to the design guide as follows, but it did not boot

During the test, booting was successful when the timing of ‘SYS_VIN_SV’ was adjusted as follows, and it was confirmed that ‘RESET_N’ matched the timing of ‘SYS_VIN_HV’.

I would like to inquire about the results as follows.

1. Is there no problem using the current boot sequence
2. It boots differently from the design guide, and why the timing of “RESET_N” has changed
3. Other things to be aware of in the current state

[Trumany]

Hi, please check if your design has below pull-down in red circle.

[yhsong]

There was no such pull-down at first.
Then I added a pull-down but it didn’t boot.

After that, the action was to adjust ‘SYS_VIN_SV’.

[Trumany]

@yhsong

Then I added a pull-down but it didn’t boot.

It should work if your design is correctly following reference. It is for Orin Industrial stable power on sequence. You can compare to sequence of devkit if you have.