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

4.2.2 Data Rate and JESD Parameters

Data rates in the signal chain often connect with the JESD mode (LMFS, SerDes rate). The device data sheet provides a list of compatible modes. Use the following parameters in the bringup.py script \to modify the configuration. Rerun the script after assigning new values to the following parameters.

## In below parameters, each element sets the particular LMFS-Hd for the particular channels.
# JESD and Serdes Parameters
sysParams.LMFSHdRx                = ["12410","12410","12410","12410"] 
sysParams.LMFSHdFb                = ["24410","24410"] 
sysParams.LMFSHdTx                = ["44210","44210","44210","44210"]
# Decimation and interpolation parameters for the data converter signal chains. 
sysParams.ddcFactorRx				= [12,12,12,12]
sysParams.ddcFactorFb				= [6,6]
sysParams.ducFactorTx				= [24,24,24,24]