P

DP0

DP1

DP2

DP3

N

P

N

DP0P

DP0N

DP1P

DP1N

DP2P

DP2N

DP3P

DP3N

DP0P

DP0N

DP1P

DP1N

DP2N

DP2P

DP3N

DP3P

TDP142

P

N

P

N

P

DP0

DP1

DP2

DP3

N

P

N

DP0P

DP0N

DP1P

DP1N

DP2P

DP2N

DP3P

DP3N

DP0P

DP0N

DP1P

DP1N

DP2N

DP2P

DP3N

DP3P

DP0P

DP0N

DP1P

DP1N

DP2N

DP2P

DP3N

DP3P

TDP142

Connector

P

N

P

N

DP0P

DP0N

DP1P

DP1N

DP2N

DP2P

DP3N

DP3P

Connector

GPU-BGA package

GPU-BGA package

27

TDP142

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SLLSEZ1C – SEPTEMBER 2017 – REVISED MAY 2019

Product Folder Links: TDP142

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Copyright © 2017–2019, Texas Instruments Incorporated

Layout Example (continued)

Figure 22 demonstrates the solution of mismatched order between the output of the device and the DisplayPort

connector for the source using BGA package. Top image of Figure 22 shows the crossing section between

TDP142 and connector. Usually, Vias would be applied to avoid the cross, but using Via can attenuate the signal

integrity. Therefore, the polarity swap would be implemented at the input of TDP142. The bottom image shows

there is no more crossing section between the TDP142 and connector, which can minimize the number of Vias

being used. Note that, the solution is only useful for the source using BGA package.

Figure 22. Layout Example, Top: signal crossing on the output. Bottom: INDP2 and INDP3 Polarity Swap