Patent ID: 7886097

Claim:
A bus arbitration system arbitrating access to a bus for a plurality of masters requesting use of the bus to which at least one slave is connected, the bus arbitration system comprising: a bus use granting unit to output a plurality of bus grant signals for granting the use of the bus to the plurality of masters that simultaneously request the use of the bus; a simultaneous processing available signal selecting unit to select a predetermined number of operation instruction signals having a predetermined similarity from among a plurality of operation instruction signals that are input from the masters in response to the bus grant signals and to instruct the slave to perform an operation within a capacity of the bus for simultaneous transmitting, wherein the predetermined number is greater than two and is equal to or less than a result of dividing a data width of the bus by a basic unit of width of data that can be at least one of input to or output from the slave; and an operation instructing unit to simultaneously transmit the selected predetermined number of operation instruction signals to the slave through the bus, wherein the predetermined similarity comprises one of operation instruction signals for controlling a same slave and operation instruction signals for controlling a same type of operation for the same slave, the same type of operation being one of a read operation and a write operation.