The  ISE  Design Suite: System Edition  provides  a  comprehensive  suite of integrated    development environment,  software tools, configuration wizards, and  IP  that  facilitates your design  and  utilizes  all  of the flexibility offered  by  a  programmable platform. Xilinx    CORE    Generator  System,  included  in  all  Editions of the ISE Design  Suite, accelerates design time by    providing    access    to highly parameterized  Intellectual Properties (IP)  for Xilinx FPGAs and is included in the ISE Design Suite. The available user-customizable  IP  functions range in  complexity  from  commonly used functions, such as memories and FIFOs,  to system-level building blocks, such as filters and transforms. Using these IP  blocks  can save days to months of design  time.  The highly optimized IP allows FPGA designers to focus efforts on  building  designs  quicker while helping  bring  products  to market faster.