Please let me know your advice about ADV9984A 0x18[3:1] Red/Green/BLue Clamp select
Please let me know about the function of each Clamp described in datasheet P.26
0x18[3:1] 000 = Clamp the Red/Green/Blue channel to ground.
0x18[3:1] 111 = Clamp the Red/Green/Blue channel to midscale.
Our customer evaluates AD9984 at below condition
1280 X 800 @60Hz( Pixclk=83.5MHz)
Analoig RGB input (0-700mV)
Digital output RGB4:4:4 ( each R/G/B 10bit)
Gain and offset are operated at the value as default setting described in datasheet when 0x18[3:1] is set to 111.
Gain and offset are operated at MAX value when 0x18[3:1] is set to 000.
0x18[3:1] = 000 -> 111
0x05 0x7F -> 0x4F
0x06 0xC0 -> 0x00
0x07 0x7F -> 0x4F
0x08 0xC0 -> 0x00
0x09 0x7F -> 0x4F
0x0A 0xC0 -> 0x00
0x0B 0xFF -> 0x01
0x0C 0xE0 -> 0xC0
0x0D 0xFF -> 0x01
0x0E 0xE0 -> 0xC0
0x0F 0xFF -> 0x01
0x10 0xE0 -> 0xC0
0x18 0x2E -> 0x78
Is description of datasheet P.26 about 0x18[3:1] correct ?
is mean the opposite as below
0： channel to midscale.
1： channel to ground.