GWBT=0
LCDC graphic window DMA control register
| GWTM | Graphic window DMA low mark |
| RESERVED | no description available |
| GWHM | Graphic window DMA high mark |
| RESERVED | no description available |
| GWBT | Graphic window DMA burst type 0 (0): Burst length is dynamic. 1 (1): Burst length is fixed. |