Asynchronous circuits can efficiently interconnect system-on-chip modules with different clock domains. Fulcrum's Nexus Interconnect features a 16-port, 36-bit asynchronous crossbar that connects through asynchronous channels to clock-domain converters for each synchronous module. In TSMC'S 130-nm process, Nexus achieves 1.35 GHz and transfers 780 Gbps.