Abstract: A router, for routing at least one input signal to at least one output, comprises at least one input module and at least one output module. Each of the input and output modules includes at least one clock selector circuit for selecting from among a first and second clock signal, and an oscillator signal, as a common output clock signal for the at least first router, based in part on whether at least one of the first and second clock signals has toggled. The clock selector circuit provides redundancy as well as distribution of clock signals among elements within each module.