Use Dedicated Inputs for Control Signals

• Take advantage of the 4 dedicated inputs which can drive dedicated, low-skew, global signals designed for high fan-out control signals (clocks, clears, output enables)

• Logic-generated control signals may be used; however, there are some disadvantages if using them:

  • More resources are required (logic cells, interconnect)
  • More skew may result
  • If the logic-generated control signals have high fan-out, the design may be more difficult to fit (compilation may fail)

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