SBAU395 april   2023 DAC39RF10

 

  1.   Introduction
  2. 1Trademarks
  3. 2Required Equipment
  4. 3Setup Procedure
    1. 3.1  Installing the High Speed Data Converter (HSDC) Pro Software
    2. 3.2  Installing the DAC39RF10EVM Configuration GUI Software
    3. 3.3  Connect the DAC39RF10EVM and TSW14J59EVM
    4. 3.4  Connect the Power Supplies to the Boards (Power Off)
    5. 3.5  Connect the Spectrum Analyzer to the EVM
    6. 3.6  Turn On the TSW14J59EVM Power and Connect to the PC
    7. 3.7  Turn On the DAC39RF10EVM Power Supplies and Connect to the PC
    8. 3.8  Turn On the Signal Generator RF Outputs
    9. 3.9  Launch the DAC39RF10EVM GUI and Program the DAC EVM
    10. 3.10 Programming the NCO
      1. 3.10.1 SPIDAC( NCO only) Operation
    11. 3.11 Launch the HSDCpro Software and Load the FPGA Image to the TSW14J59EVM
  5. 4Device Configuration
    1. 4.1 Supported JESD204C Device Features
    2. 4.2 Tab Organization
    3. 4.3 Register Map and Console Control
  6. 5Troubleshooting the DAC39RF10EVM
  7. 6References
    1. 6.1 Technical Reference Documents
    2. 6.2 TSW14J59EVM Operation
  8. 7Appendix
    1. 7.1 Customizing the EVM for Optional Clocking Support
      1. 7.1.1 LMX->DACCLK | LMX/LMK-> FPGA option (Default)
      2. 7.1.2 EXT->DACCLK | LMX/LMK-> FPGA Clocking Option
      3. 7.1.3 EXT->DACCLK | LMK-> FPGA Clocking Option
    2. 7.2 Signal Routing
    3. 7.3 Analog Outputs
    4. 7.4 Jumpers and LEDs

3.10 Programming the NCO

The following steps are only needed when DAC is programmed to JMODE 1 to 7. For JMODE0 the NCO configuration can be skipped to the section HSDCpro section. For JMODEs 1 to 7 when number of streams M is greater than or equal to 2 and interpolation factor is also set to greater than or equal to 2, the NCO(numerically controlled oscillator) can be used to mix I/Q baseband signal to generate a higher output frequency signal from the output of the DAC.

Table 3-2 describes the relationship of interpolation factor and number of streams to number of DUCs ( Digital up converter) that can be used.

Table 3-2 Supported Interpolation Factors vs Number of DUCs Enabled
Number of Streams Interpolation Factors DUCs Enabled
2 2-256x DUC0
4 4-256x DUC0, DUC1
6 8-256x DUC0, DUC1, DUC2
8 8-256x DUC0, DUC1, DUC2, DUC3
GUID-20230422-SS0I-QK8K-CWHD-8QG3DJQ1ZZDS-low.svgFigure 3-4 NCO TAB CONTROLS

With the EVM gui open on the PC, navigate to NCO tab on upper left side of the GUI.

  1. To set the NCO uncheck the DP Enable
  2. Unchek the JESD Enable
  3. Check the NCO Enable
  4. In this example, JMODE was set to 1 and number of stream is set to 2. The interpolation factor is set to 2. In Supported Interpolation Factors vs Number of DUCs Enabled only DUC0 can be used, and other DUCs have been grayed out. The data from DUC0 is routed to DAC0 and DAC1
  5. Enter the Frequency in MHz
  6. Check the JESD Enable
  7. Check the DP Enable.