An integrated circuit comprising a plurality of processing modules (M, S) coupled by an interconnect means (N) is provided. A first processing module (M) communicates with a second processing module (S) based on transactions. A first wrapper means (WM1) associated to said second processing module (S) buffers data from said second processing module (S) to be transferred over said interconnect means until a first amount of data is buffered and then transfers said first amount of buffered data to said first processing module (M).