DMA CONTROLLER AND SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To solve a problem that evaluation of whether or not allocation of a DMA requesting origin is appropriate and whether or not a failure exists in DMA request intervals is very difficult. SOLUTION: This DMA controller 5 is provided with a control part 3 having a mediation circuit to mediate a plurality of channels 2 by selecting any one of a plurality of DMA request signals 1 accepted via the plurality of channels 2 according to priority levels previously allocated to the plurality of channels 2 and a trace buffer 4 to store trace data 11 regarding the selected DMA request.