There is no non-HDCP version of the part. The part has HDCP keys in it, so you need to be an HDCP adopter to buy it. That's our obligation under the license.
ADV7627 *can* be used as a pass through device but in any mode where you do anything with the video or extract the audio, the video has to be decrypted. That requires keys.
In his example DP to HDMI-- it wouldn't matter because you can't decrypt anything-- the HDMI is a transmitter only so you can only encrypt. Indeed, our HDMI TXs have HDCP keys but we don't require the customer to be an adopter to buy them.
It's the RX keys that matter and ADV7625/6/7 have both RX and TX keys.
Dave