I have a question about saturation register (SD_SAT_Cb[7:0] (Address 0xE3) and SD_SAT_Cr[7:0] (Address 0xE4)) of ADV7280A.
The table 27 and table 28 on UG-1176.pdf shows as follows:
0x80 Gain on Cb channel = 0 dB
0x00 Gain on Cb channel = −42 dB
0xFF Gain on Cb channel = +6 dB
It doesn't seem that the decibel value(db) is proportional to the register value.
So we don't understand the relationship between them. When we set values except 0x80, 0x00 and 0xFF to the registers, then we don't know how much saturation effect can be seen.
Could you provide us the relationship between the decibel value(db) and the register value including median value?
It's also okey something like a graph which we can understand the relationship.