Data processing method in a network on chip formed of a plurality of resources (310,320,330,340,350) capable of communicating between one another and of processing, and of at least one network controller capable of initialising the communications in the network, the method comprising: - the receipt and storage in memory by a first resource of several credit management configurations sent by the network controller, - the reception by the first resource of a sequential selection instruction for credit management configurations sent by the network controller; - the selection of a common credit management configuration from the several different credit management configurations stored in the memory of the first resource, - a first communications step between at least one first resource and at least one second resource, said communication step comprising: a) at least one emission by the first resource of a first plurality of credits destined for the second resource, the destination and the number of the credits emitted by the first resource being defined in said common credit management configuration that the first resource uses, the common credit management configuration being selected according to said sequential selection instruction, b) at least one receipt by the first resource of a first plurality of data to process sent by the second resource, the emission of data to be processed sent by the second resource to the first resource being authorised following the receipt by the second resource of credits emitted by the first resource. - the receipt and storage in memory by a first resource of several credit management configurations sent by the network controller, - the reception by the first resource of a sequential selection instruction for credit management configurations sent by the network controller; - the selection of a common credit management configuration from the several different credit management configurations stored in the memory of the first resource, - a first communications step between at least one first resource and at least one second resource, said communication step comprising: a) at least one emission by the first resource of a first plurality of credits destined for the second resource, the destination and the number of the credits emitted by the first resource being defined in said common credit management configuration that the first resource uses, the common credit management configuration being selected according to said sequential selection instruction, b) at least one receipt by the first resource of a first plurality of data to process sent by the second resource, the emission of data to be processed sent by the second resource to the first resource being authorised following the receipt by the second resource of credits emitted by the first resource. a) at least one emission by the first resource of a first plurality of credits destined for the second resource, the destination and the number of the credits emitted by the first resource being defined in said common credit management configuration that the first resource uses, the common credit management configuration being selected according to said sequential selection instruction, b) at least one receipt by the first resource of a first plurality of data to process sent by the second resource, the emission of data to be processed sent by the second resource to the first resource being authorised following the receipt by the second resource of credits emitted by the first resource.