SYSTEM BUS ARBITRATION CIRCUIT INSIDE THE BASE STATION UNIT

摘要

The circuit for arbitrating system bus without the help of a CPU comprises inverters(I1-In) for receiving system bus occupation request signals form devices, NOR gates(NOR1-NORn) for operating output signals of the inverters and bus occupation status signal, and line drivers(BF1-BFn) for connecting the devices with system bus by the output signal of the NOR gates.