A low power, high speed communications bus is provided which may interconnect semiconductor dies or computer modules over short distances. The bus may be operated in either a mesosynchronous mode of operation or asynchronous mode of operation so that the bus does not require a phase locked loop (PLL)....http://www.google.se/patents/US6141765?utm_source=gb-gplus-sharePatent US6141765 - Low power, high speed communications bus
