Patent ID: 7180904

Claim:
Interface link layer device connected to a first data bus and via a transmission path to at least one other interface link layer device that is connected to a respective second data bus of a plurality of second data busses, comprising: uplink means to accept a data packet from the first data bus that has a predetermined destination or that has a channel number of a data channel that leads from the first data bus to one of said respective second data bus and to transmit it via said transmission path to said other interface link layer device serving said predetermined destination; and downlink means to output data packets received via said transmission path from one of said at least one other interface link layer device to a predetermined destination on the first data bus, wherein said uplink means comprise a first register that reflects destination identifiers which will be accepted, wherein said destination identifier is a bus identifier of said respective second data bus and said first register comprises a bus enable register identifying said respective second data bus that is serving said predetermined destinations, and wherein said uplink means comprises a packetizer that is able to repack data packets received from the first data bus into a format of the transmission path that is different to the format of the first data bus.