Networks on-chip router

A router is provided/ having: a plurality of virtual networks, a plurality of output links, at least one decoder and arbitration circuitry. Each virtual network may have a plurality of virtual network inputs and a plurality of virtual network outputs. Each virtual network output may be associated with an output link. The decoder may decode a header of a data unit received on a virtual network of one of the virtual network inputs. The decoder may generate a first request and a second request. The first request may be for the allocation of a virtual network output of the virtual network to the virtual network input. The second request may be for the allocation of an output link associated with the virtual network output to the virtual network output. The arbitration circuitry may carry out the arbitration of the first request and the arbitration of the second request in parallel.