MIF_FRAME_OUTPUT
val = nr64(MIF_FRAME_OUTPUT);
nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));