HI mattp-san.
I will report the results of the following verification items.
> When abnormality is confirmed by the BG measurement, we try that it promotes TMDS PLL reset by changing it to unused input temporarily.
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There was also the case that it is possible to improve.
However, it was not a complete solution.
By switching to another ch, do a stable display.
However, incorrect display returning to ch that occurs issues has continued.
(Some of the ADV7630's were able to improve in this procedure.)
The next step, we perform the initialization of all registers including the I2c reset.
In that case, the target ch display is return to normally.
But other 3ch display were become black-out just moment .
Therefore, this "perform the initialization of all register" method is not appropriate.
Would you inform a register range initializing an HDMI RX block effectively without performing I2C reset?
Best Regards
aimPoint