Data control device generating different types of bus requests and transmitting requests directly to one of a number of arbiters for obtaining access to a respective bus

摘要

A data control device which acquires the right to use a bus and performs data control includes a request circuit which selectively generates a plurality of request signals for acquiring the right to use corresponding buses. The plurality of request signals are based on attributes of data to be exchanged with an external device. The exchanged data includes data and commands.