2.9.5 User Flow

There are two methods of including a PLL in a design:

  • The recommended method of using a PLL is to create custom PLL blocks using Microchip's macro generator, SmartGen, that can be instantiated in a design.
  • The alternative method is to instantiate one of the generic library primitives (PLL or PLLFB) into either a schematic or HDL netlist, using inverters for polarity control and tying all unused address and data bits to ground.