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

5 Description (continued)

The SN75DP126 offers separate AUX and DDC source interfaces that connect to the DisplayPort AUX sink channel and the HDMI DDC sink channel, that seamlessly interface to graphics processor (GPU) comprising separate DDC and AUX interfaces as well as GPUs with combined DDC/AUX. Other sideband circuits such as Hot Plug Detect (HPD) are optimized to reduce external components providing a seamless connection to Intel, AMD, and NVIDIA graphics processors.

The SN75DP126 is optimized for mobile applications, and contains activity-detection circuitry on the DP++ Main Link input that transitions to a low-power Output Disable mode in the absence of a valid input signal. Other low power modes are supported, including a Standby mode with typical dissipation of ~2 mW when no video sink (for example, monitor) is connected.

The device is characterized for an extended operational temperature range from 0°C to 85°C.

At the SN75DP126 HDMI/DVI output, the differential output voltage swing and pre-emphasis levels are configurable. The SN75DP126 output signal conditioning and EQ parameters are programmable through the I2C interface, the VSadj terminal, and the I2C_CTL_EN terminal. The HDMI/DVI sink TMDS output slew rate is controlled by the SRC control input.