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參數(shù)資料
| 型號(hào)： | TDA4681 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Video processor with automatic cut-off and white level control |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, SOT-117-1, MO-015AH, DIP-28 |
| 文件頁(yè)數(shù)： | 10/28頁(yè) |
| 文件大小： | 160K |
| 代理商： | TDA4681 |
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1997 Mar 04
10
Philips Semiconductors
Product specification
Video processor with automatic cut-off
and white level control
TDA4681
Table 2
Cut-off and white level measurement lines; notes 1 to 3
Notes
1.
The line numbers given are those of the horizontal pulse counts after the start of the vertical component of the
sandcastle pulse.
* line frequency of approximately 31 kHz.
(EB) is extended blanking.
2.
3.
Table 3
Signal input selection by the fast source switches; notes 1 to 4
Notes
1.
2.
3.
4.
H: logic HIGH implies that the voltage >0.9 V.
L: logic LOW implies that the voltage <0.4 V.
X = don’t care.
ON indicates the selected input signal.
VBW2
VBW1
VBW0
R
G
B
WHITE
STANDARD
0
0
0
1
1
1
0
0
1
0
0
1
0
1
0
0
1
0
19
16
22
20
17
23
21
18
24
22
19
25
PAL/SECAM
NTSC/PAL M
PAL/SECAM (EB)
PAL*/SECAM*
NTSC*/PAL M*
PAL*/SECAM* (EB)
38, 39
32, 33
44, 45
40, 41
34, 35
46, 47
42, 43
36, 37
48, 49
44, 45
38, 39
50, 51
I
2
C-BUS CONTROL BITS
ANALOG SWITCH SIGNALS
INPUT SELECTED
FSON2 FSDIS2 FSON1 FSDIS1
FSW
2
(PIN 1)
FSW
1
(PIN 13)
RGB
2
RGB
1
Y/CD
L
L
L
L
L
L
H
L
H
L
H
X
X
X
X
X
L
H
X
X
X
X
X
L
H
X
X
X
ON
ON
ON
L
L
L
H
ON
ON
L
L
H
X
ON
ON
L
H
L
L
ON
ON
L
L
H
H
H
X
L
H
X
H
X
X
ON
ON
ON
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