Patent ID: 7940666

Claim:
Data transmission method in a network on chip with an asynchronous communication protocol, said network comprising one or several nodes and one or several resources, each node being provided with one or several inputs associated with one or several input controllers, and one or several outputs associated with one or several output controllers, the method comprising: receiving at a receiving node priority channel information associated with each of a plurality of data packets which are to be routed to the same output of the receiving node, each priority channel information and associated data packet both being sent from another node of the one or several nodes or from a resource of the one or several resources, each priority channel information being at least partially contained in a first type of synchronization signal transmitted according to the asynchronous communication protocol; and determining at said receiving node a transfer hierarchy among said plurality of data packets to be routed to said one output, said hierarchy being determined at least as a function of the priority channel information associated with each data packet, and wherein said receiving node operates without an internal clock.