6 Replies Latest reply on Dec 6, 2019 2:33 AM by MXZh_4597956

    CY7C65642-28 Unknown USB Device (Device Descriptor Request Failed)

    MXZh_4597956

      Hello everyone!

      When I connect the chip to PC it show a massage "USB device not recognized" and on Device manager it shows Unknown USB Device (Device Descriptor Request Failed)

      I have checked the document DOC-14871 and all of those are complied.

      I tried to attach the probe to D+,seems the chip was no response to the host.

      I don't know if the external 12MHz clock source is a problem.It's feed into XIN pin but there was no waveform at the XOUT.Capture.PNG