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5-5. SERVO/SYSTEM CONTROL, OSD MICROPROCESSOR PIN FUNCTION (MA-402 BOARD IC101)
Pin No.
Pin Name
I/O
Servo ground
1
VSS (SERVO)
–
2
AN GND
–
Analog ground
3
CTL(+)
I/O
CTL Head signal input/output (REC mode)
CTL Head signal input/output (REC mode)
4
CTL (–)
I/O
5
CTL-BIAS
I
CTL amp. control signal input (gain set)
6
CTL-FB
I
CTL amp. control signal input (gain set)
CTL-AMP(O)
CTL amp. control signal input (for check)
7
O
8
CTL-SMT
I
CTL amp. control signal input (gain set)
9
CAP FG
I
Capstan FG schmitt input
VCC (SERVO)
Power supply unswitch 5V
10
–
11
AFC PC
I/O
AFC oscillation signal
12
AFC OSC
I/O
AFC oscillation signal
13
AFCLPF
I/O
AFC LPF signal
14
HSYNC
I/O
Horizontal sync signal
15
VSYNC
I
V sync signal input
16
C V IN 2
I
Composite video signal input 2
Composite video signal input 1
17
C V IN 1
I
18
OSDVSS
Power supply OSD 5V
19
VIDEO OUT (CV OUT)
O
Composite video signal output
OSD ground
20
OSD VSS
–
21
4FSC OUT
O
OSC 4fsc oscillator terminal signal output
22
4Ffsc IN
I
OSC 4fsc oscillator terminal signal input
Analog ground
23
AVSS
–
24
APC Error
I
APC error voltage signal input
25
TU AFT
I
Auto tuning signal input
Function key analog voltage signal input 2
26
FUNCTION Key 2
I
27
FUNCTION Key 1
I
Function key analog voltage signal input 2
28
POWER FAIL
I
Power failure detect signal input
Destination set signal input 1
29
DEST 1
I
30
PB
–
Not used
31
DEST 2
I
Destination set signal input 2
Take up end sensor signal input
32
T SENS
I
33
S SENS
I
Supply end sensor signal input
34
VIDEO RF
I
Video RF envelope signal
Audio RF envelope signal
35
AUDIO RF
I
36
AVCC
–
Analog power supply
37
MODE1
I
Mechanism Section CAM encoder data input 1
Mechanism Section CAM encoder data input 2
38
MODE2
I
39
MODE3
I
Mechanism Section CAM encoder data input 3
40
MODE4
I
Mechanism Section CAM encoder data input 4
S REEL
S side reel FG input
41
I
42
T REEL
I
T side reel FG input
43
REMOCON
I
Remote Control (SIRCS) signal input
44
CTL-OSD
I/O
CTL amp. signal input/output (OSD)
45
CAM
O
CAM motor signal output
46
SAT SYNC LED
–
Not used
47
RR LED
–
Not used
Not used
48
SEARCH LED
–
49
END LED
O
Top/end LED on/off control signal output
50
POWER CONT
O
Power supply control signal output
EEP ROM write timing control signal output
51
WRITE CONT
O
52
BLUE BACK
O
OSD block control output
53
AUDIO DUB
O
To 'on' the audio dub filter
Easy Timer knob pulse 1 signal input
54
ETR 1
I
55
ETR 2
I
Easy Timer knob pulse 2 signal input
56
VCC
I
Power supply
Function
Pin No.
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
Pin Name
I/O
Ground
VSS
–
FLD VSS
–
FLD ground
SCL0
I/O
Clock signal input/output
Data input/output for IIC
SDA0
I/O
SCL1
I/O
Clock input/output for IIC bus interface
SDA1
I/O
Data input/output for IIC bus interface
SCI clock input/output
SCK1
I/O
SO1
O
Serial communication data signal output
SI1
I
Serial communication data signal input
To 'on/off' mesecam filter
OSD MIX
O
PAL
O
To control the de-emphasise
SW2
O
Tuner system control 2 signal output
Tuner system control 2 signal output
SW1
O
SECAM ON
–
Not used (only for secam model)
FULL ERASE
O
Full erase head on/off control signal
"L" : output when REC pause
REC P
O
IN SELECT
O
Line-input selection control signal output
FLASH WRITE ENABLE
I
Enables flash write
Timer clock terminal (32khz) output
32KHZ (OUT)
O
32KHZ (IN)
I
Timer clock terminal (32khz) input
RESET
I
Reset signal output
10MHZ (IN)
System clock terminal (10MHz) input
I
VSS
–
Ground
10MHZ (OUT)
O
System clock terminal (10MHz) input
CAP CONNET TO VSS
Smoothing capacitor connection
–
MDO
I
Sets operating mode
TV/VTR
–
Not used
APC PWM
O
APC PWM signal output
CAP TRQ PWM
O
Capstan TRQ PWM signal output
REC PROOF
I
Erasing protection tab. Cassette in detection signal input
NIL
–
Not used
Not used
NIL
–
A MUTE
O
"H" : audio mute signal output
CAP RVS
O
Capstan reverse control signal "H": when reverse
Capstan step driving signal output
CAP QR
O
DRUM QR
O
Drum motor step driving signal output
PLL CLOCK
O
Tuner PLL clock signal output
Tuner PLL chip select signal output
TU ENABLE
O
PLL DATA
O
Tuner PLL data signal output
NA PB
O
Normal audio PB signal output
"L": output when Hi-Fi audio REC pause (not used)
AF REC P
O
EX CTL
–
Not used
SECAM DET
–
Not used
To detect type of color system
C. KILLER DET
I
HEAD CLOG LED
–
Not used
MESECAM DET
I
To detect mesecam signal
Drum FG schmitt amp. input
DRUM PG
I
DRUM FG
I
Drum FG schmitt amp. put
RF SWP
O
RF switching pulse signal output
AF switching pulse signal output
AF SWP
O
DRUM PWM
O
Drum motor error signal output
CAP PWM
O
Capstan error signal output
Quasi VD pulse signal output
QVD
O
VSS
–
Ground
CSYNC
I
Composite sync signal input
VCC
Power supply unswitch 5V
–
Function
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