0 Replies Latest reply on Aug 18, 2017 2:47 PM by liuzhengliang_1678476

    About the USB2.0 Device(cyusb2014)compliance test


      I used the EHSETT tool to test the usb2.0 device(cyusb2014)compliance , When I teste the Device Receiver Sensitivity ,I could not get the correct result. 

      First I setted the device to SE0_NAK mode, And than used the Signal generator to send IN pakcet to the device, 

      But The USB2.0 Device can not return the NAK packet . 

      I am sure that the device connections and corresponding steps are correct ,because other usb2.0 device was correct . 

      Why the device could not return the NAK when received the IN packet in SE0_NAK mode ?