參數(shù)資料
型號(hào)： TMC22052AKHC
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 顏色信號(hào)轉(zhuǎn)換
英文描述： Multistandard Digital Video Decoder Three-Line Adaptive Comb Decoder Family, 8 & 10 bit
中文描述： COLOR SIGNAL DECODER, PQFP100
封裝： MQFP-100
文件頁數(shù)： 45/84頁
文件大?。?/td> 417K
代理商： TMC22052AKHC
PRODUCT SPECIFICATION
TMC22x5yA
REV. 1.0.0 2/4/03
45
Comb Filter Input
The inputs to the comb filter are selected from either the high
frequency outputs of the bandsplit filters, if using a chroma
comb filter, or the full composite waveforms when imple-
menting a luma comb. The two sets of high and low fre-
quency signals from the bandsplit filters are used for both the
luma and chroma
SIMPLE
signals, and in the generation of
the comb fail signals. These signals are denoted xHL, xHH,
and xHF where L denotes the low frequency portion of the
signal, H the high frequency portion of the signal and F the
full frequency spectrum of the input signal from line x; and
are shown in Figure 15.
Table 2. Normalized Subcarrier Frequency as a Function of Pixel Data Rates
Pixel Rate (MHz)
12.27
13.50
13.50
14.32
14.75
15.00
17.73
13.5
13.5
14.30
F
SC
(MHz)
3.57954545
3.57954545
4.43361875
3.57954545
4.43361875
4.43361875
4.43361875
3.57561149
3.58205625
3.57561149
Normalized F
SC
0.2917
0.2652
0.3284
0.2500
0.3006
0.2956
0.2500
0.2649
0.2653
0.2500
Comments
NTSC square pixel rate
NTSC D1 pixel rate
PAL-I D1 pixel rate
NTSC four times subcarrier (D2/D3)
PAL-I square pixel rate
PAL-I square pixel rate
PAL-I four times subcarrier (D2/D3)
PAL-M D1 pixel rate
PAL-N D1 pixel rate
PAL-M four times subcarrier (D2/D3)
Figure 13. Bandsplit Filter, Full Frequency Response
Figure 14. Bandsplit Filter, Passband Response
-70
-60
-50
-40
-30
-20
-10
0
0
0
0
0
0
0
Normalized Frequency
A
6
Bandsplit Filter 1
Bandsplit Filter 2
-6
-5
-4
-3
-2
-1
0
1
0
0
Normalized Frequency
0
0
A
6
Bandsplit Filter 1
Bandsplit Filter 2
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