How to set the TX mode of ADRV9009

Design tool Intel Quartus II, device model is A10gx,HDL version is GIthub HDL2018_R2, the software code is no-OS-2018_R2

The hardware changes are shown in the figure below. NCO is used with a sampling clock of 122.88mhz to generate a sine and cosine signal of 2M with a data bit width of 10bit. I think the sending clock is 61.44mhz and two 122.88m data are combined into 32bit, connected to Axi_adrv9009_dac_ch_*.
The spectrum analyzer can only see the 2.0-g signal set in the software.