Image forming apparatus performing arbitration of access requests from an ic chip to a memory

Abstract

An image forming apparatus according to the present disclosure includes: a first IC chip; a second IC chip connected to the first IC chip via a serial bus; and a memory that is either connected to or included in the first IC chip. The first IC chip includes: a first internal bus; a memory controller of the memory; a first processing circuit which outputs an access request to the memory; plural buffers corresponding to plural arbitration priority degrees of the first internal bus, and a request classifying circuit which identifies an arbitration priority degree of a requester of the access request received from the second IC chip and causes a buffer corresponding to the identified arbitration priority degree to buffer the access request. The first internal bus performs arbitration of access requests from the first processing circuit and the plural buffers in accordance with the arbitration priority degrees.