ADV7619 HDMI Map Address 0x14[2]

Question

Hello; 
 
 In our product; we are using ADV7619 to receive a 4k signal from a TV BOX; the audio signal cannot be captured. 
 When we clear the HDMI map address 0x14[2] to 0; the audio signal can be captured. While the datasheet doesn&rsquo;t mention the usage of this bit. What&rsquo;s the function of this bit and any impact if clear this bit? 
 
 Many thanks! 
 Bell

FormerMember · Accepted Answer

Here's the bit description direct from the chip definition:

<category>HDMI:Audio</category>
<name>HDCP_AUTHING</name>
<description>This mask has no effect unless HDCP_MUTE_FLAGS_EN is active. The condition represents that the authentication process is in progress. Aksv was updated but no encrypted frames detected yet.</description>
<defaultvalue>0x1</defaultvalue>
<address>0x14.2</address>

0x14.2

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ADV7619 HDMI Map Address 0x14[2]