Circuit Description Ic Description - Panasonic WJ-FS216 Service Manual

CIRCUIT DESCRIPTION
IC Description
1. Main Board
1.1.
IC623 on the Main Board is using the Digital Signal Processor IC YWD65621G045.
Description of this IC is as follows:
VPA 52
BSCDA 53
REQ0N 54
ACK0N 55
REQN 56
ACKN 57
GND 58
V 59
DD
RCK 60
REQIN 61
ACKIN 62
BSCDB 63
VPB 64
Pin Name I/O
1 BSB I BSB signal input terminal.
2 BSTB I B Strobe Pulse input terminal.
3 SEL I Select signal input terminal.
4 PANT I PAL/NTSC Selection signal input
terminal.
5 WFCKB I B WFCK Pulse input terminal.
6 OFHBB O OFHBB signal output terminal.
7 IFHBB I IFHBB signal input terminal.
8 S4FB I B S4F Clock Pulse input terminal.
9 YB7 O
10 YB6 O
11 YB5 O
12 YB4 O
Luminance Data output terminals.
(8-Bit)
13 YB3 O
14 YB2 O
15 YB1 O
16 YB0 O
17 GND – Ground terminal.
18 DYB7 I
19 DYB6 I
20 DYB5 I
21 DYB4 I
Luminance Data input terminals.
(8-Bit)
22 DYB3 I
23 DYB2 I
24 DYB1 I
25 DYB0 I
32 YA3
31 YA4
30 YA5
29 YA6
28 YA7
27 V
(TOP VIEW) 26 GND
25 DYB0
24 DYB1
23 DYB2
22 DYB3
21 DYB4
20 DYB5
Description
Pin Name
26 GND
27 V
DD
28 YA7
29 YA6
30 YA5
DD
31 YA4
32 YA3
33 YA2
34 YA1
35 YA0
36 DYA7
37 DYA6
38 DYA5
39 DYA4
40 DYA3
41 DYA2
42 DYA1
43 DYA0
44 S4FA
45 IFHBA
46 OFHBA
47 GND
48 WFCKA
49 CLR
50 BSTA
51 BFA
52 VPA
53 BSCDA
54 REQ0N
55 ACK0N
56 REQN
57 ACKN
58 GND
59 V
DD
60 RCK
61 REQIN
62 ACKIN
63 BSCDB
64 VPB
8
I/O Description
– Ground terminal.
– Power supply terminal.
O
O
O
O
Chrominance Data output terminals.
(8-Bit)
O
O
O
O
I
I
I
I
Chrominance Data input terminals.
(8-Bit)
I
I
I
I
I A S4F Clock Pulse input terminal.
I IFHBA signal input terminal.
O OFHBA signal output terminal.
– Ground terminal.
I A WFCK Clock Pulse input terminal.
I Clear Pulse input terminal.
I A WCK Strobe Pulse input terminal.
I A Burst Flag Pulse input terminal.
I A VP signal input terminal.
O A BSCD signal output terminal.
I Request 0 signal input terminal.
O Acknowledge 0 signal output terminal.
O Request signal output terminal.
I Acknowledge signal input terminal.
– Ground terminal.
– Power supply terminal.
I Read Clock Pulse input terminal.
I Request I signal input terminal.
O Acknowledge I signal output terminal.
O B BSCD signal output terminal.
I B VP signal input terminal.