In this paper we present our contribution in terms of synchronization processor for a SoC design methodology based on the theory of the latency insensitive systems (LIS) of Carloni et al[1]. Our contribution consists in IP encapsulation into a new wrapper model which speed and area are optimized and synthetizability guarantied. The main benefit of our approach is to preserve the local IP performances when encapsulating them and reduce SoC silicon area.