GPU

DP

Receptacle

TDP142

Power

Source

PCB trace of Length A

PCB trace of Length B

ML0_IN

ML1_IN

ML2_IN

ML3_IN

ML0_OUT

ML1_OUT

ML2_OUT

ML3_OUT

AUX

HPD

3.3 V

3.3 V

Copyright © 2017, Texas Instruments Incorporated

20

TDP142

SLLSEZ1C – SEPTEMBER 2017 – REVISED MAY 2019

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Product Folder Links: TDP142

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Copyright © 2017–2019, Texas Instruments Incorporated

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The TDP142 is a linear redriver designed specifically to compensate the inter-symbol interference (ISI) jitter

caused by signal attenuation through a passive medium like PCB traces and cable. It can be used in Source,

Sink, and cable applications, where the device is transparent to the link training. For illustrating purposes, this

section shows the implementations of Source application and Sink application. Figure 16 and Figure 17 are the

high level block diagram for DisplayPort Source side application and DisplayPort Sink side application

respectively, where the TDP142 is snooping both channels of AUX signal and HPD signal.

Figure 16. Source Application for TDP142