JVC InteriArt LT-26C31BC Service Manual page 8

Wide lcd panel television
Table of Contents

Advertisement

2.2.2 MAIN CPU PIN FUNCTION (IC001)
Pin No.
Pin Name
I/O
1
TCK
I
Test purpose
2
TMS
I
Test purpose
3
TDI
I
Test purpose
4
TDO
O Test purpose
5
P2.8
I
Remote control input
6
P2.9
I
Mechanical power switch detection [Pushing:L]
7
P2.10
I
IP error detection [Detection:L]
8
P2.11
O IP reset
9
P2.12
I
TV-LINK communication
10
P2.13
I
Power ON/OFF [ON:L]
11
P2.14
I
Low B protect detection [Detection:L]
12
P2.15
I
Power condition check [ON:L]
13
VSS33
I
GND
14
VDD33
I
3.3V
15
P4.5
O TV-LINK communication
16
A20
O Memory (Program ROM) address
17
A19
O Memory (Program ROM) address
18
A18
O Memory (Program ROM) address
19
A17
O Memory (Program ROM) address
20
VSS25
I
GND
21
VDD25
I
2.5V
22
A16
O Memory (Program ROM) address
23
A8
O Memory (Program ROM) address
24
A7
O Memory (Program ROM) address
25
A9
O Memory (Program ROM) address
26
A6
O Memory (Program ROM) address
27
A5
O Memory (Program ROM) address
28
A10
O Memory (Program ROM) address
29
A11
O Memory (Program ROM) address
30
A12
O Memory (Program ROM) address
31
VSS33
I
GND
32
VDD33
I
3.3V
33
A4
O Memory (Program ROM) address
34
A3
O Memory (Program ROM) address
35
A2
O Memory (Program ROM) address
36
A1
O Memory (Program ROM) address
37
A0
O Memory (Program ROM) address
38
A13
O Memory (Program ROM) address
39
RAS/A14
O Memory (Program ROM) address
40
CAS/A15
O Memory (Program ROM) address
41
VSS33
I
GND
42
VDD33
I
3.3V
43
MEMCLK
O Clock for memory
44
CSSDRAM
O Chip select for memory
45
CLKEN
O Clock enable for memory
46
CSROM
O Chip select for memory
47
RD
O Read for memory
48
UDQM
O Control IN/OUT buffer of Memory (IC003)
49
LDQM
O Control IN/OUT buffer of Memory (IC003)
50
WR
O Write for memory
51
D15
I/O Data (Program ROM)
52
VSS33
I
GND
53
VDD33
I
3.3V
54
D7
I/O Data (Program ROM)
55
D0
I/O Data (Program ROM)
56
D14
I/O Data (Program ROM)
57
D8
I/O Data (Program ROM)
58
D6
I/O Data (Program ROM)
59
D1
I/O Data (Program ROM)
60
VSS33
I
GND
61
VDD33
I
3.3V
62
D13
I/O Data (Program ROM)
63
D9
I/O Data (Program ROM)
64
D5
I/O Data (Program ROM)
1-8 (No.YA169)
Pin No.
Remark
Pin Name
I/O
65
D2
I/O Data (Program ROM)
66
D12
I/O Data (Program ROM)
67
D10
I/O Data (Program ROM)
68
VSS33
I
GND
69
VDD33
I
3.3V
70
D4
I/O Data (Program ROM)
71
D3
I/O Data (Program ROM)
72
D11
I/O Data (Program ROM)
73
RSTIN
I
Reset
2
74
P3.0
O I
C CLOCK 0 (for memory)
2
75
P3.1
I/O I
C DATA 0 (for memory)
76
P3.2
I
Remote control input
77
P3.3
I
Clock for OSD
78
P3.4
O Tuner system switch
79
P3.5
O Tuner system switch
80
P3.6
I
Teletext mode:H
81
P3.7
I
Power START
82
P3.8
I
Not used
83
P3.9
I
Picture mute
84
VSS33
I
GND
85
VDD33
I
3.3V
86
VSS25
I
GND
87
VDD25
I
2.5V
88
TXD0
O Sub micro computer communication
89
RXD0
I
Sub micro computer communication
90
P3.12
I
Not used
91
P3.13
I/O Not used
92
P3.15
I/O Not used
93
P5.14(YS2)
I
Ys for EXT-2
94
P5.15
I
Headphone detection [Detection:L]
95
TRIG_IN
I/O Not used
96
TRIG_OUT
I/O Not used
97
P6.2
I
Not used
2
98
P6.3
O I
C bus clock for IC control
2
99
P6.4
I/O I
C bus data for IC control
100
P6.5
O Multi-sound process reset
2
101
P6.6
I/O I
C bus data for IC control
102
VSYNC
O Vertical sync for OSD
103
HSYNC
O Horizontal sync for OSD
104
COR/RSTOUT O Not used
105
BLANK
O Ys for OSD/Teletext
106
VDD33
I
3.3V
107
VSS33
I
GND
108
XTAL1
I
6MHz
109
XTAL2
O 6MHz
110
VSSA
I
GND
111
VDDA
I
Not used
112
R
O R for OSD Teletext
113
G
O G for OSD Teletext
114
B
I
B for OSD Teletext
115
VSSA
I
GND
116
VDDA
I
2.5V
117
CVBS2
I
Video for Teletext
118
VSSA
I
GND
119
VDDA
I
2.5V
120
CVBS1B
I
Video for Teletext
121
CVBS1A
I
Video for Teletext
122
VSSA
I
GND
123
VDDA
I
2.5V
124
P5.0
I
AFT for tuner
125
P5.1(KEY1)
I
Key scan data 1 [ON:H]
126
P5.2
I
AGC for tuner
127
P5.3(KEY2)
I
Key scan data 2 [ON:H]
128
TMODE
I
Test purpose
Remark

Advertisement

Chapters

Table of Contents
loading

Table of Contents