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The following table shows pin descriptions
of the CPU.
Pin
Description
Pin
Description
1
Horizontal
sync. signal input
27
+5V
power supply
2
Vertical sync. signal input
28
Oscillator 2 for OSD
3
Volume control output
29
Oscillator 1 for OSD
4
Colour control output
30
Reset input
5
Brightness control output
31
Detection power failure (Error: Lo)
6
Contrast control output
32
AV2 option switch (Hi: AV2)
7
Sharpness control output
33
Option switch (System selection)
8
Tnt control output
34
Key scan input (DV)
9
AV1/AV2 switch output (AV1 :Low)
35
Key scan input (DC)
10
TV/AV switch output (TV: Hi)
36
Option input & SIF output D/K
11
AFT S-signal input
37
Option input & SIF output I
12
ipc bus SCL line
38
Option input & SIF output B/G
13
12C bus
S(JA
line
39
Option input & SIF output M/M
14
Tuning voltage output
40
System switch output SECAM
15
Ident signal input
41
System switch output 3.58
16
RC signal input
42
System switch output 4.43
17
---
43
Band switch output I (Low: VH)
18
Chroma ID input
44
Band switch output II (Low: VL)
19
Ignore signal input
45
AC switch off detection input
20
Sync. ID input
46
Option switch (RC status)
21
---
47
Sound mute output (Mute on:Low)
22
GND
48
Power on/off output (P-On: Hi)
23
GND
49
Blanking signal output for OSD
24
Oscillator input for CPU
50
OSD blue signal output
25
Oscillator output for CPU
51
OSD green signal output
26
GND
52
OSD red signal output
-7-
AAI-A
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