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For many embedded systems, data protection is becoming a major issue. On those systems, processors are often heterogeneous and prevent from deploying a common, trusted hypervisor on all of them. Multiple native software stacks are thus bound to share the resources without protection between them. NoC-MPU is a Memory Protection Unit allowing to support the secure and flexible co-hosting of multiple native software stacks running in multiple protection domains, on any shared memory MP-SoC using a NoC. This paper presents a complete hardware architecture of this NoC-MPU mechanism, along with a software trusted model organization.