What are the primary application areas for the DLL?
Clock synchronization is critical in high performance applications. The Virtex-E digital delay locked loops (DLLs) provide a mechanism to remove all clock skew in a system as well as minimize clock to output delays. In ultra high performance applications, clock skew and clock to output delays can easily be more than 50 percent of the critical path. With Virtex-E DLLs these values can be reduced to nearly zero effectively doubling possible system frequency. Furthermore, the ability to generate a precise 50/50 duty cycle is especially essential for applications requiring high performance clocking scheme (e.g. Double Data RateÔ applications).
