B2063_TX_BB_SP3
tmp = b43_radio_read(dev, B2063_TX_BB_SP3) & 0xFF;
b43_radio_write(dev, B2063_TX_BB_SP3, 0x0);
b43_radio_write(dev, B2063_TX_BB_SP3, tmp);
b43_radio_write(dev, B2063_TX_BB_SP3, 0x3F);