As the increase of chip density

design complexity problem and clock synchronization problem are more and more serious.Therefore

network-on-chip will become a popular way for on-chip interconnects.In this paper

we build up an NoC simulator

in which the inner module of the router could be detailed configured.The NoC model uses wormhole switch strategy and is built by SystemC transaction level language that has faster simulating speed.In addition

we proposes a more accurate simulating method.The result of the simulation shows that the model can be used in the simulation of NoC for multi-core structure.