On the ADV7626, I ran the HDCP certification test 3C-1-4 and got a FAIL with "Bcaps: READY bit is one".
After checking the contents of the test, after TE set AKSV again in the certification test "STEP S201S",
I read the BCAPS of the DUT and verify that the BCAPS : KSV FIFO Ready bit is down,
In BCAPS read by TE, the Ready bit appears to be standing, so it is FAIL.
In the ADV HW manual "6.27.1 Repeater Routines Performed by Repeater Controller"
It is written that the Ready bit drops when AKSV is received, but in BCAPS read by TE via DDC, the Ready bit seems to remain up.
Even if the BCAPS register (0x40) of Rx Repeater Map is read at the timing of the problem occurrence, the Ready bit part seems to be R / W impossible and the status cannot be confirmed from the driver.
I am reading BCAPS from TE via DDC. Is there a way to check the value of BCAPS read by this DDC in the register of the chip?
Also, if you know how to drop the Ready flag and why Ready does not drop, please let me know.
The ADV HW manual states that writing aksv [39:32] triggers BCAPS  to be set to "0".
I tried to read the AKSV register (0x14) of Rx Repeater Map and write the value when the status bit of AKSV update was set, but the Ready bit was still set.