參數(shù)資料
型號(hào): LC749870LG
廠商: SANYO SEMICONDUCTOR CO LTD
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA64
封裝: 5 X 5 MM, FLGA-64
文件頁(yè)數(shù): 31/44頁(yè)
文件大?。?/td> 538K
代理商: LC749870LG
LC749870LG
No.A1765-37/44
UVGAIN (Cb/Cr Gain Control)
The UVGAIN adjustment changes the Cb/Cr signal gain based on a center value. Fig.11 shows the block diagram.
The gain can be controlled using I2BCD_UGAIN and I2BCD_VGAIN.
Fig.11 UVGAIN Block Diagram
4) SECAM Color Decoder
The SECAM color decoder demodulates the carrier chrominance signal into color difference signals (U/V).
Bell Filter
The bell filter is used to maintain the color sub-carrier amplitude of the Y/C-separated chrominance signal constant.
The f0 parameter can be selected using I2BSE_BELLF0, and the Q parameter using I2BSE_BELLQ.
The bell filter is used to maintain the color sub-carrier amplitude of the Y/C-separated chrominance signal constant.
The f0 parameter can be selected using I2BSE_BELLF0, and the Q parameter using I2BSE_BELLQ.
Fig.12 Bell Filter Characteristics
CBIN
(CRIN)
×
U(V)GAIN
8bits
/128
+
CBOUT
(CROUT)
10
center(512LSB)
bell filter characteristic
-14
-12
-10
-8
-6
-4
-2
0
3.75
3.95
4.15
4.35
4.55
4.75
frequency[MHz]
Ga
in
[d
B
]
I2_BELLQ=0
standard condition
I2_BELLQ=15
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