SPRAD00 December   2021 DRA821U-Q1 , DRA829J , DRA829J-Q1 , DRA829V , DRA829V-Q1 , TDA4VM

 

  1.   Trademarks
  2. 1Introduction
  3. 2Jacinto 7 Display Subsystem Overview
    1. 2.1 Video (Input) Pipelines
    2. 2.2 Writeback Pipeline
    3. 2.3 Overlay Manager
    4. 2.4 Output Processing
    5. 2.5 Output Display Interfaces
      1. 2.5.1 Embedded Display Port (eDP)
      2. 2.5.2 MIPI Display Serial Interface (DSI)
      3. 2.5.3 Display Parallel Interface (DPI)
    6. 2.6 Safety Support
  4. 3Display Subsystem Use-case Examples
    1. 3.1 3-Display Configuration
  5. 4TDA4VM/DRA829V Hardware Display Support
  6. 5 Display Subsystem Software Architecture
    1. 5.1 Linux DSS Architecture
    2. 5.2 QNX Software Architecture
    3. 5.3 RTOS-Based DSS Support
  7. 6References

2.3 Overlay Manager

  • On-the-Fly Composition enables alpha blending on up to 4 input pipelines
  • Transparency color key (source and destination)
  • Alpha blending support: Embedded pixel alpha (ARGB and RGBA), global pixel, and combination of global pixel and pixel alpha
  • Z-order programmable (full flexibility)
  • Color Processing per pipe supports gamma correction, color space conversion, BCHS control, output dithering, scaling
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