ml86v7668a Oki Semiconductor, ml86v7668a Datasheet - Page 7

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

FUNCTIONAL DESCRIPTION
This section explains the basic functions of the IC in terms of the blocks shown in the block diagram.
Refer to the User's Manual for detailed explanations of the internal registers and any functions that are not covered
in this data sheet.
Analog Section
The analog section inputs video signals. The analog section uses the video signal channel selector, AMP and 10-bit
ADC to select the desired channel from among several video signals and convert the input to digital video data.
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OKI Semiconductor
Analog input selector
*Composite-1 input
Composite-2 input
Composite-3 input
Composite-4 input
S-Video-1 input
S-Video-2 input
S-Video-3 input
The analog input selector is compatible with composite signals and S-video signals. The maximum allowable
number of input connections is 4 channels of composite signals or 3 channels of S-video signals + 1 channel of
composite signal. The selection of these input connections can be changed by external pins or by register
controls using the I
# Related register: $68/ADC1[2:0]
Blank: Selection disabled
Input signal
ADOFF
Pin 43:INSSEL=0 Pin 43:INSSEL=1
Pins 36–38
Control pin
[000]
[001]
[010]
[011]
[100]
[101]
[110]
[111]
INS
2
C-bus, as shown in the table below.
$68/ADC1
Register
[000]
[001]
[010]
[011]
[100]
[101]
[110]
[111]
[2:0]
*: Default setting used for every register after the LSI is reset.
Composite
Analog Input Controls
Pin 8
VIN1
Composite
Luminance
Pin 10
VIN2
Luminance
Composite
Pin 11
VIN3
OFF (ADC sleep)
Input pin
Composite
Luminance
Pin 12
VIN4
Chroma
Pin 14
VIN5
Chroma
Pin 15
VIN6
Chroma
Pin 16
VIN7
FEDL86V7668A-01
ML86V7668A
ADC operation
ADC2: OFF
ADC2: OFF
ADC2: OFF
ADC2: OFF
ADC1: ON
ADC1: ON
ADC1: ON
ADC1: ON
ADC1: ON
ADC2: ON
ADC1: ON
ADC2: ON
ADC1: ON
ADC2: ON
setting
OFF
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