5-4
5-6. SERVO/SYSTEM/TIMER/TUNER CONTROL MICROPROCESSOR PIN FUNCTION (MA-315 BOARD IC161)
Pin No.
Pin name
I/O
Function
1
N.C.
–
Not used
2
DEST 0
I
Destination judgement 0
3
TU AFT
I
Tuner analog auto fine tuning input
4
FUNK KEY 2
I
9 KEY input
5
FUNK KEY 1
I
9 KEY input
6
S SENS
I
Tape end sensor input
7
T SENS
I
Tape top sensor input
8
VIDEO RF
I
Video RF input
9
AF ENV
I
Hi-Fi envelope signal input
10
MOD CONT
O
RF MOD power control
11
N.C.
–
Not used
12
N.C.
–
Not used
13
QVD
O
Quasi VD pulse output
14
REMOCON
I
Remote control signal input
15
SW2
O
Tuner system select
16
CAP RVS
O
Capstan reverse signal output
17
I
2
C CLOK
O
I
2
C clock (EEPROM, Hi-Fi, MOD, MPX, VPS)
18
RF SWP
O
RF switching pulse output
19
AF SWP
O
Hi-Fi switching pulse output
20
END LED
O
LED output to tape top and tape end sensor
21
AV CONT
O
Euro 21 pin control
22
PLL DATA (I
2
C DATA 1)
O
Tuner PLL data/I
2
C data (EEPRM, Hi-Fi, MOD, MPX, VPS)
23
PLL CLOCK
O
Tuner PLL clock output
24
T ENABLE
O
Tuner enable signal output
25
SW1
O
Tuner system select
26
MODE 4
I
CAM encoder input 4
27
MODE 3
I
CAM encoder input 3
28
MODE 2
I
CAM encoder input 2
29
MODE 1
I
CAM encoder input 1
30
REC PRF
I
Cassette erasing protect tab detect switch input
31
DEST 1
I
Destination judgment 1
32
DEST 2
I
Destination judgment 2
Fixed to GND
Fixed to GND
Fixed to 5V
“L” output when SECAM mode
47
ME SECAM
I
MESECAM judgement input
48
A MUTE
O
Audio mute signal
49
REC P
O
Hi-Fi audio recording control signal input
50
REC
O
Audio RP IC control
Pin No.
Pin name
I/O
Function
51
I
2
C CLOCK VIDEO, C+
O
I
2
C clock (VIDEO, C+)
52
I
2
C DATA VIDEO, C+
O
I
2
C data (VIDEO, C+)
53
TA MUTE
O
Tuner audio mute signal output
54
DMS UP
I
Dual mode shuttle control signal input
55
DMS DOWN
I
Dual mode shuttle control signal input
56
DEC/VTR
O
Decoder/VTR select
57
SUR ON
O
Surround control
58
CAM
O
CAM motor control
59
FULL ERS
O
Full erase control
60
POWER CONT 1
O
MTR 12V control
61
POWER CONT 2
O
SW 12V control
62
POWER SAVE CONT 1
O
–14V control
63
POWER SAVE CONT C+
O
C+ VCC control
64
OSD-CS
O
OSD chip select signal output
65
S OUT 1
O
Serial communication signal (RP)
66
FLD-CS
O
FL driver chip select signal output
67
S CLK 1
O
Serial communication (RP)
68
S OUT 0
O
Serial communication signal output (FLD, OSD)
69
S IN 0
I
Serial communication signal input (FLD)
70
S CLK 0
O
Serial communication clock output (FLD, OSD)
71
N.C.
–
Not used
72
N.C.
–
Not used
73
N.C.
–
Not used
74
C+DET
I
CANAL+ signal input
75
P FAIL
I
Power failure detection input
76
W. ENABLE
O
EEPROM write protect
77
CAP ERR
O
Capstan error output
78
DURM ERR
O
Drum error output
79
S REEL
I
Supply reel sensor input
80
T REEL
I
Take-up reel sensor input
81
PDCDET
I
PDC/VPS receiving signal input
82
CHECK
I
Check signal input
83
N.C.
–
Not used
84
C SYNC
I
Composite sync input
85
CAP FG
I
Capstan FG input
86
DURM PG
I
Drum PG input
87
DURM FG
I
Drum FG input
88
AMP VSS
–
CTL amplifier GND
89
AMP VREF OUT
O
CTL amplifier
90
AMP VPEF IN
I
CTL amplifier
91
CTL IN–
I/O
CTL singal (–) input/output
92
CTL IN+
I/O
CTL singal (+) input/output
93
CTL SW OUT
O
CTL switch output
94
CTL AMP IN
I
CTL amplifier input
95
AMPC
I
CTL amplifier
96
CTL VSS
–
CTL amplifier GND
97
CTL AMP OUT
O
CTL amplifier output
98
AMP VCC
–
CTL amplifier 5V
99
A VCC
–
Analog 5V
100
N.C.
–
Not used
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