title: Use DCM for generate clock of 78 mhz from 100 mhz clock
body: <p>I have a clock of 100 mhz. I want to use DCM to create a clock of 78 mhz. </p>
  
  <p>I think I should use two DCM, where the output of first DCM goes into the second DCM but I don't know if this will work.</p>
  
  <p>Best Regards</p>