I’m developing a bespoke carrier board for the Jetson Orin Nano.
Looking at schematic P3768-A04 is U3 powered up as soon as DC Power is applied? I see that U3 pin 2 (EN) is under the control of 5V0_SYS_EN(_R) but i see no reference to these anywhere else in the schematics. Therefore is it only VDD_3V3_SYS and VDD_1V8 that are delayed turn on. As 3V3_A0 is derived from VDD_5V_SYS it must also be enabled when DC Power is applied.
I need two USB3.1 ports. Can i take USBSS0 and USB1 to one USB socket and USBSS2 and USB2 to another USB socket. USB1 and USBSS0 supply the on-board hub, which i don’t need. Neither do i need the M.2 E socket.
USBSS0 + USB1 to one socket, it’s same usage with P3768 hub U7, it’s OK.
USBSS1 + USB0 used to typeC J5 on P3768, but you choose USBSS2 + USB2, it’s OK but what’s your plan about USB0?
Ive attached a diagram of what im trying to implement.
USB0 is used for recovery and will be a micro B connector. It will feed to GPIO00 (Pin 87) USB_0_VBUS_DET*
I want to be able to turn on/off the USB supply to my two USB3.1 sockets via a Load Switch. Can i select GPIO01 to control the load switch as it appears unallocated. How/where do i control the status of GPIO01?
Am i okay with the allocation on USB0, USB1, USBSS0, USB2 and USBSS2 to the USB3.1 sockets?
