CGX_DMAC_CAM_ACCEPT
cfg |= (CGX_DMAC_BCAST_MODE | CGX_DMAC_CAM_ACCEPT);
cfg &= ~CGX_DMAC_CAM_ACCEPT;
cfg &= ~CGX_DMAC_CAM_ACCEPT;
cfg |= CGX_DMAC_CAM_ACCEPT | CGX_DMAC_MCAST_MODE;
if (cfg & CGX_DMAC_CAM_ACCEPT)