SBAU417A July   2025  – September 2025 AFE7952

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Recommended Test Environment
    2. 2.2 Required Hardware
    3. 2.3 Hardware Setup
      1. 2.3.1 AFE7952 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 AFE7952EVM Configuration
      1. 4.1.1 Connect Latte to Board
      2. 4.1.2 Compile Libraries
      3. 4.1.3 Program AFE7952 EVM
      4. 4.1.4 TXDAC Evaluation
      5. 4.1.5 RXADC and FBADC Evaluation
    2. 4.2 AFE7952EVM 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
  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 AFE7952 EVM Status Indicators
      2. 6.1.2 TSW14J58 EVM
    2. 6.2 Trademarks
  11. 7Revision History

4.2.2 Data Rate and JESD Parameters

Data rates in the signal chain are often connected with the JESD mode (LMFS, SerDes rate), and a list of compatible modes are provided in the device data sheet. 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				= [8,8,8,8]
sysParams.ddcFactorFb				= [8,8]
sysParams.ducFactorTx				= [16,16,16,16]