FIELD: calculating; counting.
SUBSTANCE: invention relates to computer engineering. Data receiving apparatus comprises physical layer logic to receive data on one or more data lanes of a physical link; receive a valid signal on another of the lanes of the physical link, wherein the valid signal is to identify that valid data is to follow assertion of the valid signal on the one or more data lanes; and receive a stream signal on another of the lanes of the physical link, wherein the stream signal is to identify a type of the data on the one or more data lanes, wherein the type comprises packet link layer data that is intended to facilitate switching of the link state for the physical link.
EFFECT: technical result is to facilitate communication between two devices potentially supporting multiple different protocols.
23 cl, 26 dwg, 1 tbl
