The DAC38RF82 (or DAC38RF89) provides the optional interpolation of 2x in 12-bit input mode and 2x or 4x in 16-bit input mode. In addition, 1x interpolation can be used in 8, 12 or 16-bit input modes to pass the data directly to the DAC output. The SPI interface registers for the multi-DUCs are addressed through paging, with page 0 supporting the I channel and page 1 supporting the Q channel. Register PAGE_SET (8.4.8) is used to set the pages. Both pages can be selected at the same time to program both multi-DUCs simultaneously with the same settings.