According to carrier board schematic PRSNT1 connected to Button MCU.
I don’t use Button MCU.
I want to design Auto-Power On.
How can i design PRSNT1 pin ?
PRSNT1 to gnd or pull up or GPIO?
Sorry for the late response, is this still an issue to support? Thanks
As said in DG: Optional use of Present pins on module to ensure the power button will only initiate power-on if the module is mounted correctly. The PRSNT[1:0] pins are on opposing corners of the module connector.
You can just leave it unconnected if no MCU and no power button.
PRSNT[1:0] pins is input? or Output?
You can consider it as input to carrier board to indicate module existing.
Is PRSNT[1:0] pin output at AGX Orin Module?
As you can see in the Figure 5-1. Power Block Diagram in Design Guide doc, PRSNT0 is connected to GND, PRSNT1 is pull-up of power button, and PRSNT0 is connected to PRSNT1 in module so that the power button can work only when module is attached.
Morning Gents
Following up this topic, is the loopback inside module between PRSNT1 and PRSNT0 a pure copper trace or does it go through any active buffer? Because external Carrier 3.3V is a different power domain than Module internal power, having an external Pullup to external 3.3V would potentially apply electric stress to the pin L63 (PRSNT1), in the short window at power-down, when Module is powered off but carrier still has power. If the loopback is a pure copper routing, this concern would not exist.
If i don’t want to use PRSNT1, PRSNT0, POWER_BTN_N is not depends on PRSNT1, PRSNT0. right?
Can turn on the Module without PRSNT1, PRSNT0, if i didn’t use PRSNT0, PRSNT1.
The status of PRSNT0, PRSNT1 affect to Power button
PRSNT1 and PRSNT0 are connected directly by trace on module. You can use POWER_BTN_N without PRSNT1and PRSNT0.
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