Other Parts Discussed in Thread: TPS2044,
The hub is recognized by windows computer, and I am able to connect sacn disk usb drives, a logitech mouse, and an amazon basic keyboard, but when I connect other devices like a kingston USB drive, a back lit keyboard , or a device that does not have 5Vusb connected I get over-current warning from windows. When I probe the OCx pins on the TPS2044 the pin is not pulled low and the 5 volt power is shut down.
The hub is set up to be bus powered and controlled per port, but is being powered by an external supply. Does the controller recognize that it is in self powered mode and the downstream devices report how much power is required and if it is above the 100 mA it throw the error?
I read on a different post that the hub may have to be set by the host to allow power per port. Could this be the issue? If so is there documentation on how to setup the hub as a host?
I also read in another post that there needs to 15 ohm pull downs which this design does have.
I have followed the checklists and reference designs. chrome-extension://oemmndcbldboiebfnladdacbdfmadadm/https://www.ti.com/lit/an/slla407/slla407.pdf?&ts=1590104864417
