I connected ad9268 with a fpga chip. The pins of DA8~D11A and D10B~D11B are always high or low level,without any change. I also pull up these pins with 1.8K oms resister to 1.8v. And also, I changed several ad9268 chips,but has no result. I also powered ,signaled and clocked the chip without fpga, these pins aboved before still have no changes, other data pins work correctly.