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The following table shows pin descriptions
of the CPU.
Pin
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Horizontal sync. signal input
Vertical sync. signal input
Colour control output
Brightness control output
Contrast control output
Sharpness control output
Tint control output
N/AV
switch output 1(TV: Hi)
N/AV
switch output 2(TV:Hi)
TV/AV switch output 3(TV:Hi)
---
IZC bus SCL line
12C bus
SDA
line
.-.
Ident signal input
RC signal input
AV1 start input(VCR Play: Lo)
AV2 start input(VCR Play: Lo)
AV1 Ignore signal input
50/60Hz switch output (60 Hz:Hi)
GND
GND
GND
Oscillator input for CPU
Oscillator output for CPU
GND
Pin
Description
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
+5V power supply
Oscillator 2 for OSD
Oscillator 1 for OSD
Reset input
Detection power failure (Error: Lo)
Sync. ID signal input
AFT-S signal input
Option switch
Key scan input (DC)
Picture On output (On: Lo)
S-VHS output (S-VHS:Hi)
GND
BG/ I or DK switch output (BG:Lo)
UL' switch output (L': Hi)
Positive/Negative
output (Nega.:Hi)
GND
16:9/4:3 switch output (16:9:Hi)
GND
GND
GND
Sound mute output (Mute on: Hi)
Power on/off output (P-On: Hi)
Blanking signal output for OSD
Open
OSD green signal output
OSD red signal output
A7-A
-6-
-
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