register control word of DAC2/3 , AD9154 is not work.

When ACE is used to set the register control word of AD9154,Under Link0, there are two pages, DAC0/1 and DAC2/3.When setting the data-format register, either directly or register debugI can only change the value of DCA0/1, which causes my DAC2/3 channel to always output binary complement.