Cyclone® IV FPGAs offer maximum system integration with embedded GPLLs. They offer low cost by allowing up to ten internal and two external clocks to be generated from a single clock source. Support is featured for low-cost 5MHz clock inputs. Flexibility is offered to support multiple or unknown input frequencies in display applications using dynamic reconfiguration and PLL cascading without going off-chip. External memory interface support is also offered with up to seventy two configurations using a single GPLL and dynamic phase adjustments for DQS capture alignment.