Hello guys,
Something goes wrong, and I have no clue what to do further.
Inserting 4 Gb pen drive in my TUSB2046B based hub I have the message "USB HUB power exceeded". Inserting TS-RDP8W cardreader get the same error message.
Connect another pen drive - it works well. Connect Gembird USB hub and then connect 4 Gb drive into Gembird hub - the miracle! It works.
So what hell is! Why some of devices works well, some cause error?
Schematic diagram is attached.
5 V bus doesn't drop below 4.8 V even two hubs are chained.
SUSPEND pin stays low when "power exceed" occurs and turns high just after drive is disconnected.
OS is Windows XP.
