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Pin
Function
34
Sandcastle pulse input
35
Video switching signal output
36
Digital circuit power supply
37
SECAM B-Y signal input
38
SECAM R-Y signal input
39
Y signal input
40
Line AFC filtering
41
External video/Y signal input
42
Digital circuit grounding
43
PIF composite video signal
input
44
Black level detection filtering
45
External chrominance signal
input
46
Y/C circuit power supply
47
PIF and SIF composite signal
output
48
Intermediate frequency locked
phase loop filtering
49
VCO and SIF grounding
50
Intermediate frequency VCO
51
Intermediate frequency VCO
52
VCO and SIF power supply
53
SIF
signal
horizontal curve correction
54
SIF smooth filtering
55
External audio input
56
FM DC negative feedback
Reference Voltage(V)
With signal
1.2
4.9
2.6
2.6
6.8
1.6
3.3
2.2
2.9
5.1
3.7
5.0
8.0
8.0
8.9
input
and
4.3
5.7
4.2
3.8
Without signal
1.2
3
2.8
4.8
2.6
2.6
3
3
6.8
1.6
0
0
3.0
2.3
2.9
5.1
4.2
5.0
0
0
8.0
8.0
8.9
4.3
5.7
4.2
3.8
Reference
Resistance(KΩ )
Forward
Backward
10.4
10.4
2.0
2.0
1.1
1.1
8.2k
4.7k
7.6k
4.8k
6.7k
4.8k
7.7k
4.9k
6.6k
4.8k
0
0
6.6k
4.9k
219
219
7.7k
5.0k
1.7
1.7
1.0
1.0
7.8k
4.8k
0
0
1.2
1.2
1.2
1.2
0.9
0.9
18.6
18.6
4.2k
1.5k
3.8k
0
5.1k
0
21
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