BT848_TGCTRL
btwrite(0x00,BT848_TGCTRL);
btwrite(0x08,BT848_TGCTRL);
btwrite(0x00, BT848_TGCTRL);
btwrite(0x02, BT848_TGCTRL);
btwrite(0x00, BT848_TGCTRL);
btwrite(0x11, BT848_TGCTRL);