5-5. SERVO/SYSTEM/TIMER/TUNER/MODE CONTROL, OSD MICROPROCESSOR PIN FUNCTION (MA-350 BOARD IC161)
Pin No. Pin Name I/O Function
1 SW1 O Tuner system control-1 signal output
2 AN GND – Analog ground
3 APC ERROR I APC error voltage signal input
4 DMS UP I Click shuttle forward/reverse signal input (DMS models only)
5 FUNC. KEY2 I Function key analog voltage signal input
6 TU AFT I Auto fine tuning signal input
7 FUNC. KEY1 I Function key analog voltage signal input
8 POWER FAIL I Power failure detect signal input
9 DMS DOWN I Click shuttle forward/reverse signal input (DMS models only)
10 DEST I Destination set signal input
11 S SENS I Supply end sensor signal input
12 T SENS I Take up end sensor signal input
13 VIDEO RF I Video RF envelop signal input
14 AU RF I Hi-Fi audio envelop signal input
15 AN 5V – Power supply analog 5V
16 RESET I Reset signal input
17 3.58/4.43 O NTSC color freq. judge signal output
18 PAL O “H”: PAL (video block control signal output)
19 ETR1 I Easy timer knob pulse-1 signal input
20 ETR2 I Easy timer knob pulse-2 signal input
21 NAPB O Normal audio PB signal output
22 VCC – Power supply unswitch 5V
23 AF SWP O AF switching pulse signal output
24 RF SWP O RF switching pulse signal output
25 CAP VS O Capstan error signal output
26 DRUM VS O Drum motor error signal output
27 QVD O Quasi VD pulse signal output
28 N.C. – Not used
29 H.AMPSW O “H”: A-DUB mode (CTL amp. gain control signal output)
30 N.C. – Not used
31 CTL (+) I/O CTL head signal input/output (REC mode)
32 CTL (-) I/O CTL head signal input/output (REC mode)
33 VSS (SERVO) – Servo ground
34 CTL-AMP1 I CTL amp. control signal input (gain set)
35 CTL-AMP2 I CTL amp. control signal input (gain set)
36 CTL-AMP3 I CTL amp. control signal input (gain set)
37 CTL-AMP OUT O CTL amp. control signal output (for check)
38 DRUM FG I Drum FG schmitt amp. input
39 DRUM PG I Drum PG schmitt amp. input
40 CAP FG I Capstan FG schmitt input
41 VCC (SERVO) – Power supply unswitch 5V
42 VCC (OSD) – Power supply OSD 5V
43 CV IN I Composite video signal input
44 VREF I Reference bias and clamp bias power signal input
45 CV OUT O Composite video signal output
46 N.C. – Not used
47 AFC LPF I AFC LPF signal input
48 AFC OSC I AFC oscillation signal input
49 VSS (OSD) – OSD ground
50 DOSC-IN I OSC dot clock oscillator signal input
Pin No. Pin Name I/O Function
51 DOSC-OUT O OSC dot clock oscillator signal output
52 4FSC-OUT O OSC 4fsc oscillator terminal signal output
53 4FSC-IN I OSC 4fsc oscillator terminal signal input
54 CSYNC I Composite sync signal input
55 REC PRF I Erasing protection tab. cassette in detection signal input
56 IIC DATA O EEP ROM, Hi-Fi IC, tuner/serial communication data signal output
57 IIC CLOCK O EEP ROM, Hi-Fi IC, tuner/serial communication clock signal output
58 DRUM QR O Drum motor step driving signal output
59 AF REC O “H”: output when Hi-Fi audio REC
60 AF REC P O “L”: output when Hi-Fi audio REC pause
61 N.C. – Not used
62 IIC CLOCK (VIDEO) O Video, video amp. serial communication clock signal output
63 IIC DATA (VIDEO) O Video, video amp. serial communication data signal output
64 BLUE BACK O OSD block control signal output
65 APC PWM O APC PWM signal output
66 CAP TRQ PWM O Capstan TRQ PWM signal output
67 N.C. – Not used
68 TEST I Fixed to ground
69 32kHz-IN I Timer clock terminal (32kHz) input
70 32kHz-OUT O Timer clock terminal (32kHz) output
71 VSS – Ground
72 10MHz-IN I System clock terminal (10MHz) input
73 10MHz-OUT O System clock terminal (10MHz) output
74 END-LED O Top/end LED on/off control signal output
75 POWER CONT O Power supply control signal output
76 N.C. – Not used
77 N.C. – Not used
78 OSD SEL O OSD XÅftal select (PAL/NTSC) signal output
79 A MUTE O “H”: audio mute signal output
80 WRITE CONT O EEP ROM write timing control signal output
81 IN SEL O Line-input selection control signal output
82 REMOCON I Remote control (SIRCS) signal input
83 CAM O CAM motor control signal output
84 MODE1 I Mechanism section CAM encoder data 1 input
85 MODE2 I Mechanism section CAM encoder data 2 input
86 MODE3 I Mechanism section CAM encoder data 3 input
87 MODE4 I Mechanism section CAM encoder data 4 input
88 T REEL I T side reel FG input
89 S REEL I S side reel FG input
90 FLD CS O FIP driver chip select signal output
91 FULL ERASE O Full erase head on/off control signal output
92 REC P O “L”: output when REC pause
93 CAP RVS O Capstan reverse control signal “H”: when reverse
94 CAP QR O Capstan step driving signal output
95 S CLOCK O Serial communication clock signal output
96 S IN I Serial communication data signal input
97 S OUT O Serial communication data signal output
98 PLL CLOCK O Tuner PLL clock signal output
99 TU ENABLE O Tuner PLL chip select signal output
100 PLL DATA O Tuner PLL data signal output
To Next Page
Loading...
