Multi-mode scheduler, apparatus including multi-mode scheduler and multi-mode scheduling method

In a multi-mode scheduler including a NxkM scheduler for adjusting data transmission between N-pieces of input interface sections and kM-pieces of output interface sections, the multi-mode scheduler, k-pieces of NxM schedulers to be the NxkM scheduler, and (k-1)-pieces of selection circuits for switching allocated output port information input from an outside of the NxkM scheduler and information from a NxM scheduler at front step, so as to be input to the NxM scheduler as allocated output port information, and two operations are set freely with a switching operation of the selection circuits. As a result, it is possible to provide a general scheduler.