Dear Community,
You will see attached my setup in question. Here is what I need to do;
I am building a board with two different microcontrollers which both have a USB OTG controller. I want to use these ports for debugging purposes and maybe firmware upgrade etc. I do not have the space for multiple USB receptacles so I want to instead, use a single micro USB receptacle acting as the upstream port connected to a 1-to-4 USB 2.0 HUB. Downstreams, as you will see in the image, are connected to USB OTG ports of 2 different MCUs and 2 x FT232 to be converted to UART for some other purposes.
So, is there anything wrong with this implementation? I cannot find much about hubbing (?!?!) of USB OTG ports nor any reference designs. What do I do with the ID pins of A) The microcontrollers B) The receptacle.
Anyone who has designed something similar or has some extensive USB knowledge are kindly asked for guidance.
Regards,
Mete
You will see attached my setup in question. Here is what I need to do;
I am building a board with two different microcontrollers which both have a USB OTG controller. I want to use these ports for debugging purposes and maybe firmware upgrade etc. I do not have the space for multiple USB receptacles so I want to instead, use a single micro USB receptacle acting as the upstream port connected to a 1-to-4 USB 2.0 HUB. Downstreams, as you will see in the image, are connected to USB OTG ports of 2 different MCUs and 2 x FT232 to be converted to UART for some other purposes.
So, is there anything wrong with this implementation? I cannot find much about hubbing (?!?!) of USB OTG ports nor any reference designs. What do I do with the ID pins of A) The microcontrollers B) The receptacle.
Anyone who has designed something similar or has some extensive USB knowledge are kindly asked for guidance.
Regards,
Mete
