SNLU293A December   2022  – December 2022 DS560DF810

 

  1.   DS560DF810EVM User's Guide
  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 Onboard 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 DS560DF810EVM 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 DS560DF810EVM 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. 3Test Case Examples
    1. 3.1 Transmitter Test Case – EVM Board Output Evaluation for 26.5625 GBd PAM4 Data
    2. 3.2 Receiver Test Case – High Loss Input Channel to Retimer EVM, 26.5625 GBd PAM4
  6. 4Supplemental Documents
  7. 5EVM Cable Assemblies
  8. 6Revision History

1.3 Hardware Configuration to use Onboard 25 MHz Oscillator for CAL_CLK_IN

Figure 1-3 shows the schematic segment for CAL_CLK_IN. As per the schematic, different jumper placements are used to enable implementation of external CAL_CLK_IN signal or onboard 25 MHz oscillator respectively. For EVM version Rev 2 or later the end user may implement an onboard oscillator to supply the 25 MHz signal for the retimer CAL_CLK_IN input. The EVM version is listed on the bottom right corner of the evaluation board (Figure 1-1 shows the location).

Default jumper settings: External CAL_CLK_IN

  • P101 header populated, to turn off the onboard oscillator.

  • On P100 header, jumper placed between pins 3 and 5 to connect the J100 SMA connector signal to the retimer CAL_CLK_IN input pin..

Jumper settings to enable onboard CAL_CLK_IN option

  • Remove the jumper from P101 header.

  • On P100 header:

    • Remove the jumper connecting pins 3 and 5.
    • Place jumper to connect pins 1 and 3, to connect the onboard oscillator output to the retimer CAL_CLK_IN input.
Figure 1-3 DS560DF810EVM Schematic Portion for CAL_CLK_IN Input Circuit; Applies to EVM Version Rev 2 and Later