A system includes a processor and a plurality of circuits connected through an interconnection network, wherein associated to each circuit is a respective communication interface configured for exchanging data between the respective circuit and the interconnection network. In particular, a debug unit is associated with each communication interface. Each debug unit is configurable as a data-insertion point, wherein the debug unit transmits data by means of the respective communication interface to the interconnection network, or each debug unit is configurable as a data-reception point, wherein the debug unit receives data by means of the respective communication interface from the interconnection network.