Greetings. We are using a TUSB2036 to split a single upstream port into two downstream ports on a custom PCB. The downstream ports are powered from a supply that is on the PCB. We are not seeing our TUSB2036 deassert the /PWRONx lines as we believe it should, and when we attach the hub to a machine (windows 11), windows device manager states "Port Reset Failed". Attached are two screen grabs from our schematic. Please note the following:
1) R300 and R301 are depopulated
2) We recognized that the MODE pin should be asserted to work with an external oscillator - we've re-worked the board to correct this. Functionality did not change
3) We noted that the device requires a momentary pulse on the /RESET line after power up to guarantee operation. We re-worked the board to provide this. Functionality did not change.
Any help would be appreciated, we are running out of ideas.
Thanks,
Chris
