Hi, I am developing a USB stack on OHCI controller.The target environment is MPC5200B. The code behaves properly and enumerates the LS (Low-speed)devices perfectly.I am able to communicate with the keyboard. But if i plug in any FS/HS (Full-speed/High-speed) device I get "device not responding" error on get descriptor request . I tried toggling the speed 'S' bit in endpoint descriptor structure , but with no effect. Can any body let me know what is the problem? Regards Siddharth -- View this message in context: http://www.nabble.com/%22Device-not-responding%22-for-OHCI-controller-tf3187209.html#a8846038 Sent from the OpenCores - USB mailing list archive at Nabble.com.