One way to face centralized Functional Electrical Stimulation (FES) architecture limitations is to distribute electronics close to electrodes. These Distributed Stimulation and Measurement Units (DSU and DMU) are interconnected by a network. This paper focuses on the design and prototyping of a DMU dedicated to ElectroMyoGramm (EMG) activity reading. The paper exposes the embedded digital architecture as well as results of EMG activity detection.