Part Number: AM5718
We have designed our custom board in which we have used the AM5718 Processor. During the testing we found "omapdss error: HDMI I2C timeout reading EDID" error.
Please check the below image of HDMI connection of our board. we have doubts on hardware so can check and guide us if any hardware issue?
Thanks & Best Regards;
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Biser Gatchev-XID:
In reply to Nikunj Patel:
Hi Biser. Do you have a display connected on the HDMI? Ans:Yes Have you checked the signal levels on the HDMICONN_I2C signals?Ans: There was no any signal on both pins [we measured at R795 and R796] Thanks
Thanks & Best Regards,
We have checked the "HDMI_DDC_SCL" pin at R795 resistor. When we plug the HDMI Cable to the board this signal goes to low. as per attched images.
1) When HDMI Cable Plugged
2) When HDMI Cable UnPlugged
The SCL pin should not go low and stay low. This is invalid for I2C to function. There must be a design or assembly issue causing this condition. How many boards have you assembled? Do they all behave the same? Do you have a different HDMI display that you can plug in to see if the behavior is different? Another test would be to use an AM571x IDK with the HDMI panel and to probe the signals to see what is different.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.