Fulcrum Microsystems developed this blade-level switch and leveraged the advantages of both asynchronous and synchronous logic. The author describes the device architecture and explains why the design team decided to implement certain circuits either synchronously or asynchronously.
Citation:
Uri Cummings, "PivotPoint: Clockless Crossbar Switch for High-Performance Embedded Systems," IEEE Micro, vol. 24, no. 2, pp. 48-59, Mar./Apr. 2004, doi:10.1109/MM.2004.1289291