RF-ADC Settings

Calibration Mode

Selects between different calibration optimization schemes depending on the features of the input signals. Mode 1 is optimal for input frequencies F_samp/2(Nyquist) +/-10%. Otherwise, use Mode 2 or AutoCal (Gen 3 only).

Figure 1. Calibration Mode

Nyquist Zone

Choose the Nyquist zone in which the input signal is located. This is related to interleaving calibration and must be indicated correctly. Zone 1 is for odd numbered zones and Zone 2 is for even numbered zones.

Threshold Detection

Use this to set the embedded threshold detection parameter.

Decimation Settings

Use this to select the decimation factor. Xilinx recommends using the same decimation factor for all data converters in the tile to avoid potential timing issues at the interface.

Note: Do not select Off or you will not receive any data.

Calibration Frozen

Use this to freeze the interleaving calibration for each channel. The green light indicates a frozen status. The freeze function freezes or unfreezes the interleaving calibrations. The disable pin function can disable the calibration freeze real-time port control.

The following functions are for Gen 3 only.

Attenuation

Attenuation value of on-chip DSA in dB for each RF-ADC channel. The disable pin can disable the DSA pin control.

Power Management

Use to power down or power up a single channel within a tile.