An implantable stimulation system (e.g., an implantable neurostimulation system (INS)) comprises memory including a first table and a second table. The first table stores blocks of stimulation event data corresponding to stimulation events that are to be performed during a period of time (e.g., a 0.5 sec. or 1 sec. period of time). The second table stores blocks of next stimulation event time data corresponding to the period of time. The implantable stimulation system also includes a direct memory access (DMA) controller including a first DMA channel and a second DMA channel. The first DMA channel selectively transfers one of the blocks stimulation event data from the first table to one or more registers that are used to control stimulation events. The second DMA channel selectively transfers one of the blocks of next stimulation event time data from the second table to a timer that is used to control timing associated with the stimulation events. In this manner, the DMA controller is able to control stimulation.
