Hi, please can you help with the following question...
Currently I am testing read-back of BKSV data to the ADV7513 Tx chip using the ADV7611 Rx chip as a BKSV source.
When I read the BKSV registers in the ADV7611 (Repeater register map) I get the following data back:
0x00 – 0x64
0x01 – 0xDE
0x02 – 0x8B
0x03 – 0x3A
0x04 – 0xC2
However, when I read-back the BKSV registers in the ADV7513 (Main Memory Map) I get the following data back.
0xBF – 0xC2
0xC0 – 0x3A
0xC1 – 0X8B
0xC2 – 0xDE
0xC3 – 0x64
This seems to be the reversal of what I was expecting from the ADV7513 registers in conjunction with the ADV7611 registers as both devices state the same byte order in their respective datasheet.
I have also read-back 0xB8 of the ADV7513 (Main Memory Map) and confirmed this is 0x00 (no errors reading the BKSV keys).
In summary I am still unsure as to why the byte ordering does not tie up between the 2 devices for BKSV read-back during HDCP authentication?