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> there is timeout while responding to SET_CONFIGURATION request,
You probably missed to call CyU3PUsbAckSetup before USB disconnect.
Hi,Sorry, I was so hurry with reply. Of course not calling CyU3PUsbAckSetup should not affect reenumeration because from host viewpoint the USB is reset anyway. But, you never know, maybe it's still good to call it and return CyTrue from Setup callback to keep device setup handler and host setup requests in sync. See my post http://www.cypress.com/?app=forum&id=167&rID=68852Regards,K