SBAU338B October   2019  – September 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1EVM Overview
    1. 1.1 Caution and Warnings
    2. 1.2 Introduction
    3. 1.3 Kit Contents
    4. 1.4 Specifications
    5. 1.5 Device Information
  6. 2Hardware
    1. 2.1 Recommended Test Environment
    2. 2.2 Required Hardware
    3. 2.3 Hardware Setup
      1. 2.3.1 AFE79xx EVM and TSW14J58 EVM Connections
      2. 2.3.2 Power Supply Setup
  7. 3Software
    1. 3.1 Required Software
      1. 3.1.1 Software Installation Sequence
    2. 3.2 Latte Overview
      1. 3.2.1 Latte User Interface
      2. 3.2.2 Useful Latte Short-Cuts
  8. 4Implementation Results
    1. 4.1 AFE79xxEVM Configuration
      1. 4.1.1 Connect Latte to Board
      2. 4.1.2 Compile Libraries
      3. 4.1.3 Program AFE79xx EVM
      4. 4.1.4 TXDAC Evaluation
      5. 4.1.5 RXADC and FBADC Evaluation
    2. 4.2 AFE79xxEVM Configuration Modifications
      1. 4.2.1 Data Converter Clocks Settings
      2. 4.2.2 Data Rate and JESD Parameters
      3. 4.2.3 Steps to Modify NCO
      4. 4.2.4 Steps to Modify DSA
  9. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  10. 6Additional Information
    1. 6.1 Status Check and Troubleshooting Guidelines
      1. 6.1.1 AFE79xx EVM Status Indicators
      2. 6.1.2 TSW14J58EVM Status Indicators
    2.     Trademarks
  11. 7Revision History

4.2.4 Steps to Modify DSA

Enable data transmission on the DAC and data capture on the ADC. Adjust the RXNCO, FBNCO, and TXNCO at this point.

Adjust the RXDSA, FBDSA, and TXDSA at this point.

## Set RX DSA
afeInst = 0 #AFE Instance of AFE79_INST_TYPE type. If using the EVM this should be 0.
rxChSel = 0 #Value to select the RX chain.Value 0 for RXA to 3 for RXD.
dsaSetting = 20 #Analog DSA Index. Attenuation applied is   dsaSetting*0.5dB
CAFE.setRxDsa(afeInst,rxChSel,dsaSetting)

## Set TX DSA
afeInst = 0 #AFE Instance of AFE79_INST_TYPE type. If using the EVM this should be 0.
txChSel = 0 #Value to select the TX chain.Value 0 for TXA to 3 for TXD.
dsaSetting = 20 #Analog DSA Index. Attenuation applied is dsaSetting*1dB
CAFE.setTxDsa(afeInst,txChSel,dsaSetting)