Patent attributes
Port input sections generate, when the head flits of a packet are stored in the first and second registers, first and second mediation request signals destined for a desired request destination, and further generate a first notification signal used to notify the presence or absence of the first mediation request signal destined for any request destination. Upon reception of a mediation result signal, the port input sections output the flit from the first register and sequentially forward flits to be stored in the first register and the second register, and the port output sections sequentially output the flit outputted from the first register of any one of the port input sections to the node. A register suppresses a delay of the mediation result signal caused by a transmission path in a predetermined range, upon reception of the first and second mediation request signals sent thereto and the first notification signal, transmit and receive each mediation result signal between the mediation sections as a second notification signal; and perform mediation at the mediation circuit to output a mediation result signal.