US Patent 12026120 Sharing high speed serial interconnects for different protocols

A system and method to allocate serial interconnection lanes on a die to multiple communication protocols is disclosed. The die has at least one processing core. The die incudes a first communication subsystem including a controller, a protocol coding sublayer (PCS) for interchanging data, and a data interface coupled to the core. The die includes a second communication subsystem including a controller, a PCS for interchanging data, and a data interface coupled to the core. A mode input selects at least one of the first or second communication protocol. A data router has an input coupled to the PCS of the first communication subsystem and an input coupled to the PCS of the second communication subsystem. The data router has an output coupled to the set of serial interconnection lanes, and a selection input coupled to the mode input to allocate some of the lanes for the selected protocol.