These parameters are common to every RF-DAC in a tile.
- Converter Band Mode
- Each RF-DAC can operate either
independently (single band mode) or together with other converters in the tile (multi-band
mode). The following modes are available for the RF-DAC.
See RF-DAC Multi-Band Operation.
- Single
- The converter operates in single band mode.
- Multi x2 (pair 01)
- DUC channels 0 and 1 drive the input of DAC0. Digital settings, such as mixer mode and type, are available for each DUC channel. The other two RF-DACs in the tile operate in single band mode.
- Multi x2 (pair 23)
- This option is similar to the previous mode. Here DAC2 is driven by DUC channels 2 and 3. The other converters in the tile operate in single band mode.
- Multi x2 (both)
- A combination of the previous multi-band options. DAC0 converts the data from DUC channels 0 and 1. DAC2 is driven by DUC channels 2 and 3.
- Multi x4
- DAC0 accepts data from all the DUC channels in the tile.
- Multi Tile Sync
- When enabled the tile is included in a multi-tile synchronization group. RF-DAC Tile 0 must be enabled and present in the group along with converter 0 of the tile being configured to enable this option. See Multi-Tile Synchronization for details.
- Variable Output Current (Gen 3 /DFE)
- When Variable Output Current mode is enabled the output current is as specified in Zynq UltraScale+ RFSoC Data Sheet: DC and AC Switching Characteristics (DS926). DAC_AVTT must be set to 3.0V.
- Link Coupling
- This determines if the output signal from the RF-DAC is AC or DC-coupled. In DC-coupled mode the common-mode voltage is fixed. In this mode, the VOP range is reduced.