Patent ID: 8156260
Filing Date: 2012-04-10
Classification: G06F

Abstract:
1. A data transfer device for performing direct memory access transfer of data stored in a storage unit to other devices, the data transfer device comprising: a plurality of channel units arranged to correspond to the other devices, wherein the channel units that retain direct memory access transfer instructions, and output a number of the direct memory access transfer instructions retained; priority controllers that determine first priorities of the channel units on the basis of the number of the direct memory access transfer instructions retained in the channel units, respectively; an arbiter that selects one of the direct memory access transfer instructions retained in one of the channel units on the basis of the first priorities determined by the priority controllers; and a data transfer processor that performs direct memory access transfer of data stored in the storage unit to one of the other devices in accordance with the direct memory access transfer instruction selected by the arbiter; wherein the arbiter is arranged to correspond to the first priorities being determined on the priority controllers, the arbiter including a plurality of arbiters, the arbiter comprises