2 Replies Latest reply on Jan 22, 2016 5:26 AM by obiwanjacobi_1553636

    KIT-059 Crystal issue: no XTAL output

    obiwanjacobi_1553636

      I must be doing something wrong, but I just cannot see it.

         

      I am trying to add an external crystal of 20Mhz (I had these laying around). I configure the XTAL block in the design wide resources but the best I can do is ending up in the halt-on-clock-error: while(1) code. I have tried to measure the XTAL_OUT with a scope - with and without the external crystal but it is always low as is the XTAL_IN pin. I have no other external components as the kit board already has two 22pf caps on these pins.

         

      I have also played with the XTAL configuration settings, timeout etc. Nothing seems to help.

         

      Is there a trick to this?