DATA TRANSFER CONTROLLER, DATA TRANSFER CONTROL METHOD, DATA TRANSFER DEVICE, IMAGE FORMING DEVICE, DATA TRANSFER CONTROL PROGRAM AND COMPUTER-READABLE RECORDING MEDIUM RECORDING CONTROL PROGRAM

摘要

PROBLEM TO BE SOLVED: To perform band guarantee to a prescribed bus master while suppressing that a system design becomes difficult. SOLUTION: When each of the bus masters each controlling data transfer via a bus circuit outputs data transfer requirement, an arbitration circuit 42 makes one bus master execute the data transfer on the basis of each priority set in each bus master performing the output. The arbitration circuit 42 includes: a band measurement circuit 52 measuring an effective band about the data transfer by the bus master outputting band guarantee requirement; and a priority decision circuit 51 changing the priority set in the bus master outputting the band guarantee requirement according to the measured effective band. COPYRIGHT: (C)2007,JPO&INPIT