MSM7662TB 데이터 시트보기 (PDF) - Oki Electric Industry
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MSM7662TB Datasheet PDF : 62 Pages
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¡ Semiconductor
PEDL7662-02
MSM7662
FUNCTIONAL DESCRIPTION
Analog Unit
1) Analog input select: Compatible with composite video signals and S-video signals. Input
selection can be switched by register control via the I2C-bus or by
external pins. (See the below chart for pin combinations.)
2) Clamp function: An analog clamp and a digital pulse clamp can be used.
Analog clamp
Analog clamp Æ Digital clamp (hybrid clamp)
Digital clamp
Only the digital clamp can be set as the pedestal clamp.
# Related register MRB[3:2]
3) AGC amp:
The AGC function operates depending upon the input level.
Manual gain setting is also possible. This AGC function operates at 2
stages, the analog unit and digital unit. Digital decoded data is output
in conformance with ITU-RBT.601.
Refer to the explanation of M[1] pin (pin 90).
# Related register ADC2[6:4]
4) A/D converter: Two internal 8-bit A/D converters sample at twice the pixel frequency.
(Sampling at the pixel frequency is possible by changing the register
setting.)
# Related register ADC1[2:0]
List of Analog Input Conditions
Input Signal Control Pin Register
Input Pin
ADC Selection
INS[2:0] ADC1[2:0] VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 ON OFF
Composite-1 Input* [000]
[000] Composite
ON OFF
Composite-2 Input [001]
[001]
Composite
ON OFF
Composite-3 Input [010]
[010]
Composite
ON OFF
Composite-4 Input [011]
[011]
Composite
ON OFF
Composite-5 Input [100]
[100]
Composite
ON OFF
S-video-1 Input
[101]
[101] Luminance
Chroma
ON ON
S-video-2 Input
[110]
[110]
Luminance
Chroma ON ON
All inputs Off
[111]
[111]
OFF (Sleep)
OFF OFF
Blank spaces: non-selectable *: register default setting after LSI reset
M[1] pin setting 0: external mode, 1 internal register mode
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