Search FAQs on the left to see if your question has been answered. Click on the dropdown to view all of the documents associated with the product. If you can't find your question, click on Ask a Question

HDCP detection in ADV7842

The ADV7842 can indicate if the input is encrypted or not.

This can be read back in the HDMI Map

Register 0x05[6] - Content encrypted. 

Register 0x04 [4] – HDCP Key Error ( this will be set if for example when using a non- HDCP part ,and trying to establish authentication).

From my experience, It is very common for DVD players to encrypt the link regardless if the content needs protection or not.