_DMA_V2_SPEC_DEV_A_XB_BITS
#define _DMA_V2_SPEC_DEV_B_XB_IDX (_DMA_V2_SPEC_DEV_A_XB_IDX + _DMA_V2_SPEC_DEV_A_XB_BITS)
#define _DMA_V2_SPEC_YB_BITS (32 - _DMA_V2_SPEC_DEV_B_XB_BITS - _DMA_V2_SPEC_DEV_A_XB_BITS - _DMA_V2_CMD_BITS - _DMA_V2_CHANNEL_BITS)