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  3. AR# 70379: HDMI Transmitter (TX) Subsystem v3.0 - Software Driver v4.0 - Why is the scrambler still enabled when switching from HDMI 2.0 resolutions (with TMDS clock >340 MHz) to HDMI 1.4 resolutions?

AR# 70379

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HDMI Transmitter (TX) Subsystem v3.0 - Software Driver v4.0 - Why is the scrambler still enabled when switching from HDMI 2.0 resolutions (with TMDS clock >340 MHz) to HDMI 1.4 resolutions?

Description

Why is the scrambler still enabled when switching from HDMI 2.0 resolutions (with TMDS clock >340 MHz) to HDMI 1.4 resolutions?

Solution

This is a known issue with the HDMI TX Subsystem v3.0 Software Driver v4.0 that will be resolved in Vivado 2018.1 and later.

This issue has been fixed in Vivado 2018.1 and later.

  • Vivado 2017.4 - Users can download the HDMI Transmitter Subsystem Patch from (Xilinx Answer 70380) to work around this issue.

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
70380 2017.4 - HDMI Transmitter Subsystem, Software Driver v4.0 - HDMI Transmitter Subsystem Software Driver v4.0 Patch Download N/A N/A
65911 HDMI 1.4/2.0 Transmitter (TX) Subsystem - Release Notes and Known Issues for the Vivado 2015.4 tool and later versions N/A N/A
AR# 70379
Date 01/12/2018
Status Active
Type General Article
IP
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