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參數(shù)資料
| 型號： | CXD2093Q |
| 廠商： | Sony Corporation |
| 英文描述： | Digital Comb Filter (NTSC) |
| 中文描述： | 數(shù)字梳狀濾波器（NTSC制式） |
| 文件頁數(shù)： | 7/15頁 |
| 文件大?。?/td> | 235K |
| 代理商： | CXD2093Q |
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CXD2093Q
Description of Functions
Y/C separation mode
The Y/C separation mode can be switched by the following pin settings.
Adaptive processing mode:
Y/C separation is performed by detecting the correlation between three lines and switching between comb
filter and BPF processing.
BPF separation mode:
Y/C separation is performed only by BPF processing.
Through mode:
The composite video signal input from ADIN (Pin 2) is A/D converted and then D/A converted without
modification. D/A outputs are AYO (Pin 9) and ACO (Pin 7).
Horizontal aperture correction circuit
This circuit corrects the frequency response degradation caused by the aperture effects accompanying D/A
conversion. This circuit is valid in the adaptive processing and BPF separation modes noted above.
Trap filter circuit
A trap filter is applied to remove the frequency components near fsc in the luminance signal after Y/C
separation.
This reduces the fsc frequency component gain by approximately 2.5dB.
This circuit is valid in the adaptive processing and BPF separation modes noted above.
Using the internal PLL (clock selection method)
Mode name
Adaptive processing mode
BPF separation mode
Through mode
MOD2 (Pin 17)
L
H
H
MOD1 (Pin 19)
L
L
H
PLL used
PLL not used
FIN (Pin 37)
fsc input
2fsc input
4fsc input
CKSL (Pin 38)
H
H
L
PLSL (Pin 39)
L
H
L/H
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