RF-DAC Tile Configuration - 2.6 English

Zynq UltraScale+ RFSoC RF Data Converter v2.6 Gen 1/2/3/DFE LogiCORE IP Product Guide (PG269)

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2.6 English

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.
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.