Hi. I have been going through the Product Design Guides for Nano and the Xavier NX. Also, took a look at the P3449_B01_Concept_schematics.pdf and P3509_A01_Concept_schematics.pdf. I have a few questions.
On the Xavier NX, will implementing the Power Sequencing without a Button MCU and using an analog circuit instead lead to loss of some functionality?
It seems like the Button MCU on the Xavier NX:
a. holds POWER_EN high
b. provides Power Button functionality
c. handles the SHUTDOWN_REQ* from the module
d. handles DC Jack Unplug.
e. handles SYS_RESET*
Is there anything apart from these features that the MCU is responsible for?
The Button MCU chip has BMCU_ACOK input. What are the use cases for this pin?
I don’t see the circuitry BMCU_ACOK and BMCU_PGOOD in Nano’s Module Power ON/OFF Schematic. Does this mean that the Nano’s carrier board doesn’t check for these when powering on/off.
I don’t see the circuitry to handle SYS_RESET* either in Nano’s Schematic. How does Nano carrier board handle SYS_RESET*?