Dynamically Reconfigurable Synthesizer IC in market with High Resolution compatible with Virtex FPGAs
I am wonder to know whether some Frequency Synthesizer IC are available in market to be able to dynamically reconfigure (change) their operating frequency)? For instance, Suppose that I have a digital design operating at 600MHz frequency that has 1.67 nsec clock frequency. I wan to increase the clock period with around 0.5 nsec to reduce the frequency of synthesizer dynamically. Is there any ASIC frequency synthesizer available in market with this capability?