FE1.1s - USB device descriptor failed.

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hamid1373
 
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Joined: Wed Jul 13, 2022 6:32 pm

FE1.1s - USB device descriptor failed.

Post by hamid1373 »

Hi there,

I designed a PCB which has a FE1.1s USB Hub controller. this project must work as a micro-USB HUB. The problem is that when I connect my device to computer, "device not recognized" error appears. device LED's turns on for a moment and everything goes off again. Host says that "A request for the USB device descriptor failed."

Before this I thought that because my usage is a simple BUS- Powered HUB i don't need to program the chip but now I think I should.
My question is How to program it?! what should Product ID and vendor ID should be? is there any kind of table for it? what kind of tools do I need to do the programming?? do i need to add an EEPROM to my design or the programming is just for the first time???

The attached file is my schematic with some changes (to make it bus powered) and also the errors.

It would be a great help if anyone guide me to solve this problem!!!

best regards,
HAMIDREZA
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