DMA_PREFETCH_CONF
DMA_PREFETCH_CONF(0, 4, 0x080);
DMA_PREFETCH_CONF(1, 4, 0x0c0);
DMA_PREFETCH_CONF(2, 4, 0x100);
DMA_PREFETCH_CONF(3, 4, 0x140);
DMA_PREFETCH_CONF(4, 4, 0x180);
DMA_PREFETCH_CONF(16, 4, 0x280);
DMA_PREFETCH_CONF(17, 4, 0x2c0);