Abstract: An ICD document describes data stream characteristics of the electronic integrated system. To achieve an integrated avionics system, complete and real time transfer of data is an important factor. This paper explains the ICD design method. From the network protocol and message parameter, network transfer features are studied. Based on a reasonable algorithm of the prime network parameter, a necessary and sufficient condition and a practical method are proposed to verify data stream integrity and real time transfer for the ICD document.

Key words: data bus, ICD, real time transfer