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

4.2.1 Data Converter Clocks Settings

This parameter is used to configure the data converter clocks and clock distribution path.

#Configures the reference input frequency to the on-chip PLL of the AFE79xx.
sysParams.FRef     = 491.52
#Configures the RXADC converter sample rate.
sysParams.FadcRx   = 2949.12
#Configures the FBADC converter sample rate.
sysParams.FadcFb		 = 2949.12
#Configures the TXDAC converter sample rate.
sysParams.Fdac     = 2949.12*4
#Sets the clock source for the RXADC converters. The source is now from the on-chip PLL.
sysParams.externalClockRx = False
#Sets the clock source for the TXDAC converters. The source is now from the on-chip PLL.
sysParams.externalClockTx = False