Bus system for electronics or computer system in which a bus controller controls two or more buses to speed bus access and ensure that urgent bus access requests are processed almost immediately

摘要

Bus system has a bus (BUSA) and a number of units (M1, M2, P1-P3, EBU) connected together using the bus. A bus controller (BUSAB CTRL) that assigns bus access, when a unit requests to be connected to another unit, controls the bus. One or more additional buses (BUSB) enable at least some of the units to be connected together. The bus controller controls bus access by assigning access to no bus, one bus or more than one bus.