Bus system for master-slave device accesses, has multiple pseudo-delayer connected to controllers which delay and output access commands to slave devices for having longer latency periods

摘要

A bus system and a command delivering method includes (a) delivering a first command to a first slave device, and (b) delivering a second command to a second slave device at a point in time which is less than or equal to a latency time of the second slave device in advance of the completion of data transfer according to the first command. Accordingly, preparation necessary for data transfer can begin sooner, thereby reducing idle clock cycles of a data bus.