SNLU324 March   2023

 

  1.   Abstract
  2.   Trademarks
  3. 1Hardware Description and Setup
    1. 1.1 Required Hardware
    2. 1.2 General Hardware Test Setup Procedure
    3. 1.3 Hardware Configuration to Use External 25 MHz Oscillator for CAL_CLK_IN
  4. 2Software Description
    1. 2.1 Software Installation Sequence
    2. 2.2 Latte Functional Overview
    3. 2.3 Useful Latte Short-Cuts
    4. 2.4 DS560DF410EVM Initialization Through the Latte GUI
      1. 2.4.1 Connect Latte to Board
      2. 2.4.2 Compile Libraries
      3. 2.4.3 Example: Programming DS560DF410EVM for 26.5625 GBd PAM4 Test Case
      4. 2.4.4 Retimer Configuration
      5. 2.4.5 Retimer Useful Functions (Contained in the usefulFunctions.py Latte Script)
      6. 2.4.6 Vertical Eye Monitor
  5. 3Related Documentation
    1. 3.1 Supplemental Content
  6. 4EVM Cable Assemblies

2.4.1 Connect Latte to Board

This step establishes a connection between the PC running Latte and the DS560DF410EVM. Power the DS560DF410EVM for this step.

  1. In the scripts window of Latte, under setup section, select setup.py.
  2. Press F5 to run the program.
  3. Check the Log window to confirm there are no errors where the following line should be displayed.

    i2c – USB Instrument created.

    Gpio Programmer – USB Instrument created.

Missing or obsolete drivers for the FTDI chip in the DS560DF410EVM is a common error source. Windows Device Manager can be used to verify the connection between the PC and the EVM by checking the USB instantiations. The user may update PC with the appropriate driver if necessary.

Note:

There are two places in setup.py that use the word Dual in lines 34 and 42. These need to be replaced with the word Quad for the script to run without errors.

Additionally, make sure devIdentifier on line 2 is set to a value of 1 for DS560DF410.