The IP core is used to set the interpolation rate. This is an IP core setting because changing the interpolation rate directly affects the physical interface as the bandwidth to the PL changes. The filters that are enabled are shown in the following figure.
Figure 1. RF-DAC Interpolation Filter Configuration
Note: I/Q input data and mixing requires a minimum of 2x interpolation. If full bandwidth I/Q data is required, two RF-DAC data converters can be operated as independent real streams, containing the I and Q data respectively. Phase adjustment cannot be done when using QMC.