8 Replies Latest reply on Apr 30, 2012 9:25 AM by philippe.leger

    No Enumeration when the rising edge of the +5V supply is in bad shape

    philippe.leger

       Hi 

         

      I have a problem wih the CYUSB3014-BZX.  it does not enumerate (windows does not detect a usb device) when the rising edge of the +5V supply is in bad shape.  I have to do a hard reset.  I try to hold the reset pin for 200ms while the +5V is unstable without succes (respecting the reset sequence in the datasheet).  We sometime have this problem on the CYUSB3014-BZX evaluation board.  What is the correct reset sequence?

         

       

         

      Thanks.