isp dma source trans control register
DMA_EN | write 1 to triger dma to get 1 frame |
DMA_UPDATE | write 1 to update reg_dma_burst_len & reg_dma_data_type |
DMA_DATA_TYPE | this field configures the idi data type for image data |
DMA_BURST_LEN | this field configures dma burst len when data source is dma. set according to dma_msize, it is the number of 64bits in a dma transfer |
DMA_INTERVAL | this field configures dma req interval, 12’b1: 1 cycle, 12’b11 2 cycle … |