BUS ARBITRATION CONTROL APPARATUS IN COMMUNICATION SYSTEM HAVING COMMON BUS STRUCTURE

摘要

PURPOSE: A bus arbitration control apparatus in a communication system having a common bus structure is provided to efficiently use a bus by flexibly determining a bus arbitration cycle according to the quantity of entities connected to a common bus. CONSTITUTION: A bus arbitration control apparatus in a communication system having a common bus structure is composed of a common bus control unit(2), an arbitration cycle determination unit(3) and an arbitration cycle transmitting unit(4). The common bus control unit(2) collects the preparation status of each entity connected to a common bus. The arbitration cycle determination unit(3) determines an FRS(FRame Synchronization) cycle according to a result collected in the common bus control unit(2). The arbitration cycle transmitting unit(4) transmits the FRS cycle, determined in the arbitration cycle determination unit(3), to each entity.