Figure 120 shows NCO Modulator Block Diagram.
This has the expected structure, and indicates 2 outputs, OUT_I and OUT_Q.
However there is only one DAC output port.
Should I assume OUT_I is converted to analog?
It seems OUT_Q is a no connect. But why is OUT_Q developed?
I'll note that OUT_I and OUT_Q are quadrature modulated on the same carrier, so they could be combined before conversion to analog.
The datasheet needs some additional details in this output area.