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some pins of ad9268's dataout has no change! why?

Question asked by on Dec 18, 2016
Latest reply on Dec 19, 2016 by PMH

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.