SLLSEA9B February   2012  – August 2015 SN75DP126

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Power Supply Electrical Characteristics
    6. 7.6  Main Link Input Electrical Characteristics
    7. 7.7  DisplayPort Main Link Output Electrical Characteristics
    8. 7.8  HDMI/DVI Main Link Output Electrical Characteristics
    9. 7.9  HPD/CAD/EN Electrical Characteristics
    10. 7.10 AUX/DDC/I2C Electrical Characteristics
    11. 7.11 DisplayPort Main Link Output Switching Characteristics
    12. 7.12 HDMI/DVI Main Link Switching Characteristics
    13. 7.13 HPD/CAD Switching Characteristics
    14. 7.14 AUX/DDC/I2C Switching Characteristics
    15. 7.15 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Implementing the EN Signal
      2. 8.3.2 Hot Plug Detect (HPD) and Cable Adapter Detect (CAD) Description
      3. 8.3.3 OVS Function Description
      4. 8.3.4 AUX and DDC Configuration Details
      5. 8.3.5 Source-Side Main Link EQ Configuration Details
      6. 8.3.6 DP-HDMI Adaptor ID Buffer
      7. 8.3.7 GPU with a Unified AUX/DDC Configuration
      8. 8.3.8 GPU with Separate DDC and AUX Channels
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operating Modes Overview
    5. 8.5 Register Maps
      1. 8.5.1 Link Training and DPCD Description
      2. 8.5.2 Local I2C Interface Overview
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 AC Coupling Capacitors
        2. 9.2.2.2 Configuration Options
        3. 9.2.2.3 Dual Layout for Single or Dual Power Supply
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Analog vs Digital vs High Power
    2. 10.2 Analog Power-Supply Pins and Analog Reference Voltages
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Layer Stack
      2. 11.1.2 Power Plane Do's and Don'ts for Four-Layer Boards
      3. 11.1.3 Differential Traces
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Community Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • One Dual-Mode DisplayPort™ (DP++) Input; Switchable to One DP++ Output or One TMDS Output Compatible with HDMI 1.4b and DVI
  • Supports DP v1.1a and DP v1.2 Signaling Including HBR2 Data Rates to 5.4 Gbps
  • Supports HDMI 1.4b with TMDS Clock Frequencies up to 340 MHz with 10 m Cable
  • Glue-less interface to AMD, Intel, and NVIDIA Graphics Processors
  • Auto-Configuration Through Link Training for DisplayPort Connection
  • Integrated DDC-Accessible DP-HDMI Adaptor ID for HDMI/DVI Sink Recognition
  • Output Signal Conditioning with Tunable Voltage Swing and Pre-Emphasis Gain for both DisplayPort and TMDS Outputs
  • Highly-Configurable Input-Variable Equalizer
  • Two Device Options Including a Dual Power-Supply Configuration for Lowest Power
  • 2-kV ESD HBM Protection
  • Temperature Range: 0°C to 85°C
  • 56-Pin 5-mm x 11-mm QFN Package

2 Applications

  • Notebook PC
  • Desktop PC
  • PC Docking Station
  • PC Standalone Video Card

3 Description

The SN75DP126 switches one Dual-Mode DisplayPort (DP++) input to one Dual-Mode DisplayPort (DP++) sink output or one HDMI/DVI sink output. The HDMI/DVI output has a built-in level translator compliant with DVI 1.0 and HDMI 1.4b standard TMDS signaling, and is specified up to a maximum data rate of 3.4 Gbps, supporting resolutions greater than 1920 X 1440 and HDTV deep color at 1080p. An integrated DP-HDMI Adaptor ID buffer can be accessed when the HDMI/DVI sink is selected to indicate support for HDMI signaling.

The device compensates for PCB-related frequency loss and switching-related loss to provide the optimum electrical performance from source to sink. The DP++ Main Link signal inputs feature-configurable equalizers with selectable boost settings.

At the SN75DP126 DP++ Main Link output, four primary levels of differential output voltage (VOD) swing and four primary levels of pre-emphasis are available as well as a secondary level of boost adjustment, programmed through I2C, for fine-tuning the Main Link output. The device can monitor the AUX channel and automatically adjust output signaling levels and input equalizers based on DP Link Training commands.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SN75DP126 WQFN (56) 11.00 mm × 5.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application

SN75DP126 app_pic_FP_llsea9.gif