SCALABLE, HIGH-EFFICIENCY, HIGH-SPEED SERIALIZED INTERCONNECT

Serial communication using a packetization protocol engineered for efficient transmission is provided. Data link layer (DLL) control packets can be generated for transmission of control messages. Each DLL control message packet can have a DLL control packet length, and the DLL control packet length can be a fixed length. Physical layer (PHY) control packets can be generated. Each PHY control packet can include one of the DLL control packets and a control token. The length of each PHY control packet can be the sum of the DLL control packet length and a control token length of the control token. The PHY control packets can be encapsulated in frames. Each of the frames can include a synchronization symbol having a symbol length. The length of each frame can be the sum of the symbol length and an encapsulation length, which can be twice the length of the PHY control packet.