5-5. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTION (MA-366 BOARD IC101)
Pin No. Pin Name I/O Function
1 REC PRF I Erasing protection tab. cassette in detection
2 D GND – Digital circuit ground
3 KEY 1 I Function key analog voltage input 1
4 KEY 2 I Function key analog voltage input 2
5 KEY 3 I Function key analog voltage input 3
6 KEY 4 I Function key analog voltage input 4
7 S SENS I Supply end sensor signal input
8 V SWP ADJ I Video switching position adjustment
9 A SWP ADJ I Audio switching position adjustment
10 MESECAM DET I MESECAM detect signal input “H” : MESECAM
11 V ENV I Video playback signal envelope
12 A ENV I HiFi audio playback signal envelope
13 T SENS I Take-up end sensor signal input
14 NC – Not used
15 AN +5V – Analog circuit ground
16 RESET I Reset signal input
17 REC P O “L” : output when REC pause mode
18 PAL O “H” : PAL/MESECAM (video block control signal output)
19 AU MUTE O “H” : audio mute signal output
20 NTSC O “H” : NTSC (video block control signal output)
21 KILL IN I Color killer detect signal input
22 VCC (+5V) – Power supply
23 AF SWP O AF switching pulse output
24 RF SWP O RF switching pulse output
25 CAP VS O Capstan error signal output
26 DRUM VS O Drum motor error signal output
27 QVD O Quasi VD pulse output
28 NC – Not used
29 NC – Not used
30 NC – Not used
31 CTL+ I/O CTL head signal input/output
32 CTL– I/O CTL head signal input/output
33 VSS GND SERVO – Servo circuit ground
34 CTL AMP 1 I CTL Amp. control (Gain set)
35 CTL AMP 2 I CTL Amp. control (Gain set)
36 CTL AMP 3 I CTL Amp. control (Gain set)
37 CTL AMP OUT O CTL Amp. output (For check)
38 DRUM FG I Drum FG Schmidt amp. input
39 DRUM PG I Drum PG Schmidt amp. input
40 CAP FG I Capstan FG Schmidt input
41 +5V SERVO – Servo circuit power supply
42 +5V OSD – OSD circuit power supply
43 VIDEO IN I Video signal input
44 VREF I Reference bias and clamp bias power pin
45 VIDEO OUT O Video signal output
46 CHAR.BIAS – Not used
47 AFC LPF I AFC LPF pin input
48 AFC OSC I AFC oscillator pin input
49 VSS OSD – OSD circuit ground
50 DOSC IN I OSD dot clock oscillator (input)
Pin No. Pin Name I/O Function
51 DOSC OUT O OSD dot clock oscillator (output)
52 2FSC OUT O OSD 2fsc oscillator terminal (output)
53 2FSC IN I OSD 2fsc oscillator terminal (input)
54 C SYNC I Composite Sync signal input
55 MESECAM OUT O “H” : MESECAM (video block control signal output)
56 SHARP 1 O “H” : Active (SHARPNESS control)
57 SHARP 2 O “H” : Active (SHARPNESS control)
58 CHROMA 1 O “H” : Active (CHROMA control)
59 CHROMA 2 O “H” : Active (CHROMA control)
60 CHROMA 3 O “H” : Active (CHROMA control)
61 CHROMA 4 O “H” : Active (CHROMA control)
62 MODE 1 I Mechanism section CAM encoder input (data 1)
63 MODE 2 I Mechanism section CAM encoder input (data 2)
64 MODE 3 I Mechanism section CAM encoder input (data 3)
65 MODE 4 I Mechanism section CAM encoder input (data 4)
66 CAP PWM O Capstan PWM output
67 CAP RVS O Capstan reverse control signal “L” : when reverse
68 TEST I Fixed to ground
69 32kHz OUT – Not used
70 32kHz IN – Not used (Fixed to +5V)
71 VSS (SYS) – Ground
72 10MHz IN I System clock terminal (10MHz)
73 10MHz OUT O System clock terminal (10MHz)
74 END LED O Top/End LED ON/OFF control
75 DANCE 4 LED O ““L” : On, “H” : Off (LED)”
76 CASSETTE IN LED O ““L” : On, “H” : Off (Cassette in LED)”
77 DANCE 3 LED O ““L” : On, “H” : Off (LED)”
78 DANCE 2 LED O ““L” : On, “H” : Off (LED)”
79 DANCE 1 LED O ““L” : On, “H” : Off (LED)”
80 POWER R LED O ““H” : Standby, “L” : Power on (ON/STANDBY LED)”
81 POWER G LED O ““L” : Standby, “H” : Power on (ON/STANDBY LED)”
82 REMOCON I Remote control signal (SIRCS) input
83 TV/OTHER I “Connect LINE-1 select “H” : Other, “L” : TV”
84 SYNCHRO REC LED O ““H” : On, “L” :Off (SYNC REC LED)”
85 NT/PAL EP/LP O Not used
86 PICTURE LED O “H” : Active (RESOLUTION CONTROL II LED)
87 REC LED O ““H” : On, “L” :Off (REC LED)”
88 T REEL I Take-up reel FG input
89 S REEL I Supply reel FG input
90 HiFi LED O ““H” : On, “L” :Off (HiFi LED)”
91 HiFi L LED O ““H” : On, “L” :Off (Lch LED)”
92 TV/VTR O RF output TV/VTR select
93 HiFi R LED O ““H” : On, “L” : Off (Rch LED)”
94 SHARPNESS PWM O Video IC sharpness voltage
95 CAM O “CAM motor control “H” : Forward, “M” : Brake “L” : Reverse”
96 CAP QR O Capstan step driving
97 AF CLK O I2C-bus clock (HiFi)
98 AF DATA O I2C-bus data (HiFi)
99 V CLK O I2C-bus clock (Video)
100 V DATA O I2C-bus data (Video)
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