I was looking to make a custom USB Hub for a project but I couldnt find any of them that worked and using the chip GL850G. The chip is pretty old and cheap, but in my case I didnt need to use any of the fast transfering USB3, probably the next version can be based on this schematic.
I have took the schematic from a chinese website and re-written on eagle + designed the PCB, which is not the best compact and neat design but it worked as prototype.
I am offering all the files and part lists in case someone will want to make a custom USB Hub.
Any thoughts about a Multi-TT version? Using this Single-TT chip is cheaper, but it means poor performance if more than one 12 Mbit/sec or 1.5 Mbit/sec devices attempt to communicate simultaneously.
Do you have design files for this?