Router and transmission method thereof on packet-circuit switching chip

Abstract

The invention discloses a router and a transmission method thereof on a packet-circuit switching chip forming networks on chips. An input state device in the router controls the work state of an input channel and transmits received requisite signals to a priority encoder; the priority encoder encodes the request signals according to the set fixed priority and transforms input target node address signals to route direction signals by an address decoder to be output; an arbiter receives decoding results of the address decoder, outputs interconnected signals of an input port and an output port and occupation signals of the input port according the sequence of the fixed priority and the occupation condition of the ports until selecting a proper route to reach the target node; and a crossbar switch receives the interconnected signals output by the arbiter and realizes the correct interconnection between the input port and the output port. The invention has the advantages of little resource consumption and small transmission time delay. The invention is suitable for forming networks on chips with high performance, and can be applied to complicated systems on chips adopting on-chip network structure.

Description

technical field [0001] The invention relates to a packet-circuit switching on-chip router applied to an on-chip network, in particular to a packet-circuit switching on-chip router with low resource consumption and high performance constituting an on-chip network and a transmission method thereof. Background technique [0002] A network on chip (NoC) consists of a resource node (Resource), a router (Router), a channel (Channel) and a network interface (Network Interface, NI), such as figure 1 Shown: [0003] 11 is a resource node: a node that executes computing and storage tasks. [0004] 12 is a router: also called a switch node or a communication node, which performs communication tasks. [0005] 13 is channel: refers to the connection between the resource node and the switch node, between the switch node and the switch node ( figure 1 E, W, N, S and L in ). [0006] 14 is a network interface: refers to an interface between a resource node and a switch node, and is usua...

AI Technical Summary

Problems solved by technology

The data transmission delay of a packet switching router is related to the network conditions, and its delay is usually long (tens to thousands of cycles, and the ideal delay of each router is between four to seven cycles), which is not easy to meet the real-time requirements of the system

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