DRAMCR3_M_RAS3DRV0
DRAMCR3_M_RAS2DRV2 | DRAMCR3_M_RAS3DRV0 | \
#define RAS3DRV_4MA DRAMCR3_M_RAS3DRV0
#define RAS3DRV_8MA (DRAMCR3_M_RAS3DRV0 | DRAMCR3_M_RAS3DRV1)
#define RAS3DRV_12MA (DRAMCR3_M_RAS3DRV0 | DRAMCR3_M_RAS3DRV1 | DRAMCR3_M_RAS3DRV2