I want to confirm that my understanding is correct or not.
I already know that ADV7480 include HDCP key in the memory.
So this means our customer don't need to do some thing about HDCP writing.
Is my understanding correct?
Please find our expert comments below
It depends if the system is an HDCP repeater system or not.
In non-repeater mode, I believe this is correct. You should just make sure BCAPS[7:0] (HDMI RX REPEATER Map, Reg 0x40[7:0]) is set appropriately.
In repeater mode on the other hand, the HDCP keys of the downstream devices must be gathered by the system controller and copied in the Rx front end. Please refer to the HDCP specification, and to section 5.3.23 of the ADV748x Hardware Manual Rev. PrB.
We are checking with part specialist on this question now and we will update you soon.
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