TDP158: Inter-Pair Length Matching Requirement

Shu Khan Lee

Part Number: TDP158
Other Parts Discussed in Thread: TDP1204, TMDS1204

Hello

From TDP158 datasheet Layout Guidelines section, it requires to do the inter-pair length matching, but not provide the detail information.

Could you provide the inter-pair length matching design rule for HDMI?

Thanks.

over 1 year ago

0 Zach Dryer over 1 year ago

TI__Genius 13300 points

Hello,

This design guide will be helpful not only for inter-pair length matching, but for other HDMI design related questions.4812.Texas Instruments HDMI Design Guide.pdf

Thanks,

Zach

0 Shu Khan Lee over 1 year ago in reply to Zach Dryer

Prodigy 60 points

Hi Zach

The guide provided only for TMDS mode. We need to support TMDS and FRL mode. Is there any layout design guideline for FRL mode?

0 Zach Dryer over 1 year ago in reply to Shu Khan Lee

TI__Genius 13300 points

Hello,

The TDP158 is a 6-Gbps DP++ 1.1 to HDMI 2.0 redriver. HDMI 2.0 supports TMDS but for FRL support you will need to use a device that supports HDMI 2.1.

We have two redrivers that support HDMI 2.1 TDP1204 (for source side applications) and TMDS1204 (for sink side applications).

For TDP1204, please reference the following table in the datasheet for designing your inter-pair skew.

Thanks,
Zach

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TDP158: Inter-Pair Length Matching Requirement