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  3. AR# 69998: HDMI Transmitter (TX) Subsystem - Why might my downstream device have problems detecting the correct output resolution?

AR# 69998

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HDMI Transmitter (TX) Subsystem - Why might my downstream device have problems detecting the correct output resolution?

Description

Why might my downstream device have problems detecting the correct output resolution?

For example, the downstream device detects the resolution as 1912 or 1916 instead of 1920.

Solution

The following are some possible causes you can check in this situation:

  • Check that the Ti DP159 is being properly updated.
  • Make sure that the GT in the Video PHY has the buffer bypass mode enabled, to ensure that the data on all channels is aligned.

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
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# 69998
Date 10/23/2017
Status Active
Type General Article
IP
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