5 Replies Latest reply on Oct 30, 2014 6:40 PM by user_57926609

    DVDAC Digital Clocks calculation error in Creator 3.0 SP2

    user_57926609

      In my design have three 8 bit DACs but I need 10bit, so I decided to use the new DVDAC component.

         

      But in my design I have only 1 free digital clock divider.

         

      Resource Type                 : Used : Free :  Max :  % Used
      ============================================================
      Digital clock dividers        :    7 :    1 :    8 :  87.50%

         

      So I changed one 8 bit DAC with one 10 bit DVDAC with INTERNAL CLOCK, the compilation works and now I have zero digital clock divider free:

         

      Resource Type                 : Used : Free :  Max :  % Used
      ============================================================
      Digital clock dividers        :    8 :    0 :    8 : 100.00%

         

      It is OK!

         

      But if I switch the DVDAC component to EXTERNAL CLOCK, putting a clock component to supply externally the 250kHz the IDE gives me an error:

         

      "Clock Error: (There are too many new digital clocks used in the current design. The selected device only supports '8' new digital clocks but '9' have been used.)"

         

      And, if I put three DVDAC with the SAME EXTERNAL CLOCK, the Creator 3.0 SP" gives me the error:

         

      "Clock Error: (There are too many new digital clocks used in the current design. The selected device only supports '8' new digital clocks but '11' have been used.)."

         

       

         

      I think that I'm using only 8 digital clocks, because I use the same external clock for the three DVDACs.

         

       

         

      So I think that Creator 3.0 SP2, in the case of DVDAC component, calculates in a wrong way the number of clock dividers.

         

      It is possible to verify and eventually fix this problem?

         

       

         

      Thanks a lot for your collaboration

         

      Graziano G. Ravizza