SPRADK1 September   2025 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP , AM62A1-Q1 , AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-Q1 , AM62L , AM62P , AM62P-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Spread-Spectrum Clocking
    1. 1.1 SSC Modulation Rate
    2. 1.2 SSC Modulation Depth
    3. 1.3 SSC Spread Type
    4. 1.4 SSC Modulation Profile
  5. 2PLL SSC Implementation Details
    1. 2.1 PLL SSC Configuration Registers
    2. 2.2 PLL SSC Implementation Sequence With DSS PLL17 on AM62Px
  6. 3SSC Conclusion and Considerations

3 SSC Conclusion and Considerations

Some display panels can have clocking limitations not specified in the data sheets, so the displays need to be validated to have sufficient functional margin with the jitter introduced by spread spectrum modulation. Any display-related issues due to the introduction of SSC need to be worked directly with the display panel manufacturer. To minimize the impact of introducing jitter to the overall system, the recommendation is to keep the modulation depth as low as possible while still meeting emission standards and regulations with sufficient margin.

CAUTION: The customer assumes all responsibility for the configuration and usage of spread-spectrum clocking. The customer must research the clock limitations associated with the selected display panel and configure SSMOD to be compatible with that specific display panel. There are no plans for TI to participate in the assessment of the appropriate SSMOD configuration because TI does not know the clocking limitations associated with the selected display panel. The customer also needs to verify that the SSMOD configuration does not cause any system-related issues for any operating condition. The customer must work with the display panel vendor to resolve any issue caused by enabling SSC with SSMOD.