DRAMCR3_M_RAS1DRV1
DRAMCR3_M_RAS1DRV1 | DRAMCR3_M_RAS1DRV2 | \
#define RAS1DRV_8MA (DRAMCR3_M_RAS1DRV0 | DRAMCR3_M_RAS1DRV1)
#define RAS1DRV_12MA (DRAMCR3_M_RAS1DRV0 | DRAMCR3_M_RAS1DRV1 | DRAMCR3_M_RAS1DRV2