With the increasing demands of today and tomorrow's applications, chips become communication dominated. Traditional bus-based architectures are struggling because they cannot scale to application demands. New architectural paradigms were developed to cope with communication demands, called Networks-on-Chips (NoC). NoC are micro networks that are inspired from general networks and which solve the scalability problem. Designers still have to cope with the complexity of systems and in order to meet the time-to-market constraint they need good design flows and tools to automate the design process...