usb2.0

Hi there, I designed a PCB which has a FE1.1s USB bub controller. 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. I have searched for driver issues but it seems that everything is...

Hi Friends, Here I am attaching the datasheet of an MCU of STMicroelectronics and a typical pin configuration of a USB 2.0. PA11 and PA12 of the controller are assumed for USB_DM and USB-DP respectively. Can I directly connect those pin to the USB through a series 15R resistor and a TVS Diode in...