Setting HDCP frame enable bit before HDCP desired bit by itself may not solve an Ri mismatch issue. HDCP Ri mismatch error typically caused by HDCP not disabled in proper sequence with stopping sending video data to the ADV7511W. Please do not rely on AV Mute to avoid sending data. Depends on the system you may also try to delay Ri checking position. Please refer to register bits 0xFC[5:3] description. As for time between HDCP disable and re-enable, please use between 66ms and 100ms in the repeater system.
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Re: HDCP Handling of ADV7511W.
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