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R-Y 0 to 9 OUT
3-35 to 53
3-36 to 54
B-Y 0-9 OUT
3-55 to 73
3-56 to 74
3-16 to 34
VFY 0-9 OUT
3-15 to 33
SDA OUT
3-6
SDA IN
3-8
SKIN GATE OUT
3-11
3-10
HD
3-9
VD
3-7
36M (X) OUT
3-5
IC52
SAO0-9
158
109-113
HDI
157
115-119
VDI
12
HIY0-11
123-134
SCI0-11
51
SDA1
ARC-O
HI-Y
SCO2-11
136-145
77, 78
SABI0-9
82-86
89-91
155
DL00
50
154
SCLI
DL01
CLK
PORB
SDA0
39
5
52
1
2, 3
IC31
IC36
IC30
2
5
3
8
D
Q
3
6
Q
IC30
IC37
5
6
13
12
IC37-39
R/B AD CLK PHASE1
A
R/B AD CLK PHASE2
B
4
VARIABLE
6
R/B
5
19
DL
G1
1
3
G
2
19
IC30
11
10
IC30
IC30
1
2
5, 6
4
IC63
1
4
BKP-5090
Block Diagram
IC55-58
10
R-Y 0-9 IN
10
B-Y 0-9 IN
BUFFER
10
VFY 0-9 IN
40-49
IC54
3-12
SKINGATE IN
R-Y1-10
B-Y1-10
112
ARDT1
ENC (1/2)
POR OUT
CHROMA
3-4
SCK OUT
1
3
SKINGATE ON
2
74
10
VFDTL
19-28
IC59
B0-9
32
G CK
33
B CK
31
R CK
VFDTL LEV
42
10 BIT 50MSPS
RGB 3CH D/A CONV.
CHROMA LEV
41
VFY LEV
40
29
BLK
BO
59
10
IC51
Q19, 22, 23
Q20, 21
DL SYNC
LEVEL
LPF
CTL
Y SYNC
LEV
DL BLK
LPF
Q405
IC400, Q400-404
1-7
IC53
30-32
23
HI-Y
D0-9
IO
10
BLK
D/A
CONV.
9
CLK
19
VREF
IC63
HI-Y
10
13
IC54
161
125-129
A. VD
158
132-134
A. HD
SCO0-7
167
ICK (SCK)
186
CLR
165
ICB (SDA)
163
ICS (ACK)
116-123
SCCI0-7
152
18M
146
BF
ENC (2/2)
144
BLKG
142
2FH
140
LALT
136
FLD1
148
SYNC
138
VD
150
HD
110
EXT VD
109
EXT HD
113
CHAR
114
CHRGT
154
36M
160
MKBC
107
MARK
PR-242
PR-242
Block Diagram
10
R-Y (L, 1 to 8, M)
1-17 to 26
10
B-Y (L, 1 to 8, M)
1-6 to 15
10
Y (L, 1 to 8, M)
1-28 to 36, 38
28-37
15-24
Y1-10
B-Y0
10
TST
VFY
8
13
9
74
11
12
74
92-101
80-89
IC74
4, 5
6
9-18
1-8, 63, 64
G0-9
R0-9
Q16
55
CHROMA
GO
BUFFER
C (X) OUT
1-115
RO
Q17
IC60, 62, 75, Q27
51
DF YS
BUFFER
Q18
VF DTL MIX
AND
BLACK
Q15
VF-Y (X) OUT
1-119
FEED BACK
CLIP
DF DTL
CLAMP CLP
BUFFER
DL SYNC
N/P IN
1-106
DL BLK
SYNC
HI-Y (X) OUT
1-117
ADD
IC64
Q26, 406-408
12 9
IC66
Q24
BLK
1-8
20
D0-7
IO
BUFFER
INT SC (X) OUT
1-112
8
+4.8V
D/A CONV.
Q25
IC67
INT/EXT IN
1-105
2-5
20
VCC
14-17
1
D0-7
VIN
SC CONT IN
1-114
8
6
+4.8V
WR/RDY
2
6
IC70
D/A CONV.
1
IC69
5
7
8
12
BF IN
1-59
BLKG IN
1-61
2FH IN
1-67
LALT IN
1-65
FLD1 IN
1-63
SYNC IN
1-57
VD IN
1-55
HD IN
1-53
IC68
EXT VD IN
1-41
13
7
EXT HD IN
1-39
4
6
CHAR VF IN
1-44
17
3
CHAR BACK IN
1-46
18
2
IC69
4
16
CURSOR2 OUT
1-45
6
14
CURSOR1 OUT
1-43
18MHz (X) OUT
1-107
7-9
7-9
DA, 1-21 to 30
DA, 1-10 to 19
DA, 1-32 to 40, 42
DA, 1-74
DA, 1-78
SG, 1-36
DA , 1-76
SG, 1-76
SG, 1-35
SG, 1-78
SG, 1-43
SG, 1-44
SG, 1-47
SG, 1-46
SG, 1-45
SG, 1-42
SG, 1-41
SG, 1-40
IF, 1-5
IF, 1-6
AT, 1-28
AT, 1-27
IF, 1-9
IF, 1-10
PR-242
SG, 1-59
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