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Visitor II
July 26, 2019
Question

The error with HDMI2C1-14HD,this problem is more urgent, causing our mass production products to be discontinued.

  • July 26, 2019
  • 1 reply
  • 590 views

My product production plan is based on HDMI2C1-14HD designed Micro-HDMI interface, the software system is Ubuntu

I have encountered a problem, when I connect the MicroHDMI interface, the system can not read the EDID normally, showing 0X50 no ACK;

But the same circuit, when I use the HDMI-A interface design, I can correctly read the display's EDID. I have not found the cause of this problem.0690X000009Z6jiQAC.pngThis is the schematic of the HDMI-A interface.

0690X000009Z6jxQAC.bmp

This is the schematic of the HDMI-Micro interface.

0690X000009Z6k2QAC.bmp

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    1 reply

    ST Employee
    August 21, 2019

    This is strange, schematics on SCL and SDA seems OK. I saw a difference between schematics: connection between GND and PGND. Perhaps a tests with a BLM to connect PGND and GND can be tried on Micro HDMI schematic.