SLLA682 July   2025 TDP142

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Device Configuration
  6. 3Equalization Selection
  7. 4Equalization Selection Example
  8. 5AUXP/N and SNOOPENZ Configuration
  9. 6Layout Guidelines
    1. 6.1 GND Stitching
    2. 6.2 AC-Coupling Capacitors
    3. 6.3 Layout Example
  10. 7Summary
  11. 8References

1 Introduction

The TDP142 is a DisplayPort™ linear redriver intended to support up to HBR3 (8.1Gbps) for each lane. Additionally, the transparency to the DP link training makes TDP142 a position independent device, designed for source or sink application. DisplayPort standards define a minimum eye height and width at the end of a channel in which a compliant receiver must operate. Longer trace lengths add ISI contributing to the loss of the channel which closes the eye such that the eye height and width are no longer compliant and the receiver cannot reliably recover the data on that channel. The TDP142 provides equalization gain to compensate for the board trace loss due to ISI and restore to a compliant eye.