WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);
WREG32(RS480_NB_MC_DATA, (v));
WREG32(RS480_NB_MC_INDEX, 0xff);
WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);
WREG32(RS480_NB_MC_DATA, (v));
WREG32(RS480_NB_MC_INDEX, 0xff);