ml86v7668a Oki Semiconductor, ml86v7668a Datasheet - Page 8

• Manufacturer Part Number: ml86v7668a
• Description: Ntsc/pal/secam Digital Video Decoder
• Manufacturer: Oki Semiconductor

·
OKI Semiconductor
AMP/analog AGC function
This function converts video input signals to the optimum level for the ADC using the analog AMP of the AGC
function. The AGC function has an output level adjustment function in the luminance block of the digital
section in addition to the AMP input level adjustment function. Manual setting of the AMP gain is also
possible.
# Related register: $69/ADC2
The analog AMP gain can be set also by using the AMP gain external setting pins GAINS[3:0] (pins 39-42), as
shown in the table below. This method is enabled when INSSEL (pin 43) = “0”. The gain values in the table are
design target values.
GAINS[3:0]
Pins 39-42
(1001)
(1010)
(1011)
(1100)
(1101)
(1110)
(1111)
0000
0001
0010
0011
0100
0101
0110
0111
1000
$69/ADC2[5:0]
(00_0010)
(00_0000)
11_1111
11_0001
10_0110
01_1101
01_0110
01_0000
00_1011
00_0111
00_0100
Register
--
(Setting prohibited)
Gain factor
1.014
1.263
1.565
1.946
2.400
3.000
3.789
4.800
6.000
FEDL86V7668A-01
ML86V7668A
8/32