SNLA474A October   2024  – October 2024 DS90UB971-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Typical Test Standards Overview
    1. 2.1 ISO 10605 Standard
    2. 2.2 Performance Status Categorization
  6. 3 FPD-Link Hardware Optimizations
    1. 3.1 Connector Grounding
    2. 3.2 PCB to Enclosure Grounding
    3. 3.3 MODE Selection
  7. 4 FPD-Link Software Optimizations
    1. 4.1 LOCK Detection Tuning
    2. 4.2 Parity Error Handling
    3. 4.3 Forward Error Correction
      1. 4.3.1 FEC Test Capabilities
  8. 5 Optimization Test Data
    1. 5.1 Baseline Hardware - No Software Optimization
    2. 5.2 Optimized Hardware - No Software Optimization
    3. 5.3 Optimized Hardware and Software
  9. 6 Example Scripts for Software Optimization
  10. 7 Additional System Level Software Options
  11. 8 Summary
  12. 9 References
  13. 10Revision History

5.1 Baseline Hardware - No Software Optimization

The first round of testing was performed with a baseline DS90UB9702-Q1 hardware design that does not include the optimizations described earlier in the guide. The system is configured with a basic link setup that does not include any of the software optimizations for transient immunity. The goal of this testing is to establish a baseline for ESD performance. The system was tested with both contact and air discharge methods at various strike points around the camera module and deserializer box. After each stress level, diagnostic registers were recorded to identify if there was any loss of FPD-Link LOCK, or uncorrectable CSI-2 errors during the test which can result in flicker, black screen, or distortion in the video feed.

Table 5-1 Baseline Hardware - No Software Optimization ESD Results
Strike Type Level Typical OEM Requirement Result
Air ±4kV Class A B
Contact ±4kV Class A B
Air ±6kV Class A B
Contact ±6kV Class A B
Air ±8kV Class A C
Contact ±8kV Class B C
Air ±15kV Class B C
Contact ±15kV Class B C
  • Class A = No loss of LOCK, no uncorrectable CSI-2 errors.
  • Class B = Temporary loss of LOCK or CSI-2 errors which automatically recover
  • Class C = Soft reset of the SoC required to restart video