參數(shù)資料
型號(hào)： SAA7151B
廠商： NXP SEMICONDUCTORS
元件分類： 顏色信號(hào)轉(zhuǎn)換
英文描述： Digital multistandard colour decoder with SCART interface DMSD2-SCART
中文描述： COLOR SIGNAL DECODER, PQCC68
封裝： PLASTIC, MO-047AC, SOT-188-2, LCC-68
文件頁(yè)數(shù)： 6/49頁(yè)
文件大小： 311K
代理商： SAA7151B
April 1993
6
Philips Semiconductors
Product specification
Digital multistandard colour decoder with
SCART interface (DMSD2-SCART)
SAA7151B
Fig.2 Pin configuration.
handbook, full pagewidth
SAA7151A
SAA7151B
MEH293
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
CUV4
CUV5
CUV6
CUV7
CVBS0
CVBS1
CVBS2
CVBS3
VDD2
VSS1
CVBS4
CVBS5
CVBS6
CVBS7
GPSW1
GPSW2
HCL
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
UV2
UV3
UV4
UV5
UV6
UV7
Y0
Y1
VDD4
VSS3
Y2
Y3
Y4
Y5
Y6
Y7
CPI
2
2
2
3
3
3
3
3
3
3
3
3
3
4
4
4
4
L
V
H
V
H
S
X
X
V
L
V
V
O
S
S
H
I
9
8
7
6
5
4
3
2
1
6
6
6
6
6
6
6
6
C
C
C
C
V
C
R
A
S
F
V
F
M
F
G
U
U
FUNCTIONAL DESCRIPTION
System configuration
The SAA7151B system processes digital TV signals with
line-locked clock in PAL, SECAM and NTSC standards
(CVBS or S-Video) as well as RGB signals coming from a
SCART/peri-TV connector. The different source signals
are switched, if necessary matrixed and converted (Fig.3
and Table 1).
8-bit CVBS data (digitized composite video) and 8-bit UV
data (digitized chrominance and /or time-multiplexed
colour-difference signals) are fed to the SAA7151B. The
data rate is 27 MHz.
Chrominance processing
The 8-bit chrominance input signal (signal “C” out of CVBS
or Y/C in Fig.4) is fed via the input interface to a bandpass
filter for eliminating the DC component, then to the
quadrature demodulator. Subcarrier signals from the local
oscillator (DTO1) with 90 degree phase shift are applied to
its multiplier inputs. The frequency depends on set TV
standard.
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