Table of Contents
Advertisement
1.7.
IC102, IC202 and IC302 on the Main Board are using the Chroma Difference Decoder IC YWM51271FP.
Description of this IC is as follows:
BF G
1
BF GW
2
C OUT
3
C CONT
4
C IN +
5
IN –
6
ACC
7
REF
8
APC
9
VCXO OUT 10
TINT 11
VCXO IN 12
GND 13
B–Y IN 14
14
16
15
B–Y
OUT
19
R–Y
OUT
20
270°
KIL
21
KIL REF
22
BLK IN
23
COMP
COMP
HD IN
24
VIDEO
IN
25
SEP
26
SEP
27
LEV
28
SYNC
1
OUT
28 SYNC OUT
27 SEP LEV
26 SEP
25 VIDEO IN
24 HD IN
23 BLK IN
22 KIL REF
(TOP VIEW)
21 KIL
20 R–Y OUT
19 B–Y OUT
18 SC
17 N/P
16 R–Y IN
15 Vcc
18
17
13
12 11
180°
10
90°
9
90°
7
6
5
VREF
2
3
4
8
Pin
Name
1 BF G
2 BF GW
3 C OUT
4 C CONT
5 C IN+
6 IN–
7 ACC
8 REF
9 APC
10 VCXO OUT O VCXO signal output terminal.
11 TINT
12 VCXO IN
13 GND
14 B–Y IN
15 Vcc
16 R–Y IN
17 N/P
18 SC
VCXO
19 B–Y OUT
Out
20 R–Y OUT
21 KIL
APC
22 KIL REF
23 BLK IN
24 HD IN
25 VIDEO IN
ACC
26 SEP
27 SEP LEV
28 SYNC OUT
IN –
C IN +
20
I/O
Description
O Burst Gate Pulse position output
terminal.
I Burst Gate Pulse Width adjusting
terminal.
O Chroma signal output terminal.
I Chroma Saturation Control input
terminal.
I Chroma signal input terminal.
I Input Bypass Capacitor connecting
terminal.
– ACC Filter connecting terminal.
– Reference Voltage terminal.
– APC Filter connecting terminal.
I TINT control signal input terminal.
I VCXO signal input terminal.
– Ground terminal.
I B–Y signal input terminal.
– Power Supply terminal.
I R–Y signal input terminal.
I NTSC/PAL switching signal input
terminal.
"H" = NTSC mode
"L" = PAL mode
O Subcarrier (180°) signal output
terminal.
O B–Y signal output terminal.
O R–Y signal output terminal.
– Killer Filter Capacitor connecting
terminal.
– Killer Reference Filter Capacitor
connecting terminal.
I Blanking Pulse input terminal.
I HD signal input terminal.
I Sync separated Video signal input
terminal.
– Sync Separator Feedback
Capacitor connecting terminal.
– Sync Separator Slice Level
adjusting terminal.
– Sync signal output terminal.
Advertisement
Table of Contents
