Abstract: A router circuit for selectively connecting an input terminal of the router circuit to either a specified output terminal of the router circuit (crossbar personality) or to any of a group of output terminals of the router circuit associated with a single output channel (hyperbar personality). The router circuit is made configurable as either a crossbar switch or a hyperbar switch by dividing the router chip into sections, where each section is associated with a group of input terminals, and wherein various grant circuits within each of the sections have enable/disable input terminals connected by controllable switches to either enable/disable output terminals of grant circuits in an adjacent section (hyperbar personality) or to fixed logic levels (crossbar personality). In the crossbar configuration, for each input terminal of a section, only one grant circuit per channel is enabled.