5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTION (MA-400 BOARD IC162)
Pin No. Pin Name I/O Function
1NC– Not used (open)
2NC– Not used (open)
3NC– Not used (open)
4NC– Not used (open)
5 24V CONT O 24 V power control signal
6 DEST1 I Destination identification input 1
7 DEST2 I Destination identification input 2
8 TU AFT I AFT input from TUNER for station selection
9 S SENS I Tape end sensor input
10 T SENS I Tape top sensor input
11 RF ENV I Video RF envelope input
12 AF ENV I HiFi envelope input
13 FU KEY2 I Function key input (9 keys)
14 FU KEY1 I Function key input (9 keys)
15 POWER KEY I Not used (open)
16 MOD CONT O RF modulator ON/OFF control
17 KKP + I KKP 2-phase pulse B input
18 KKP - I KKP 2-phase pulse A input
19 QVD O Quasi VD pulse
20 NC – Not used (open)
21 CROT O Head azimuth information
22 HA SW O SP/EP head switching signal
23 ENV S I Identification signal of SP/EP head output comparison & detection
24 RF SWP O Video RF switching pulse output
25 AF SWP O HiFi switching pulse output
26 END LED O End sensor LED output
27 AV CONT O EURO 21 pin AV CONT signal output
28 AF REC P O HiFi record control signal
29 FULL ERS O Full erase control signal for A DUB
30 VSS – Ground terminal
31 17.734475MHz (in) I Main clock input
32 17.734475MHz (out) O Main clock output
33 VCC –
“Power supply input terminal
(high speed mode: 4.0 to 5.5V, low speed mode: 2.6 to 5.5V)”
34 32kHz (in) I Sub clock input
35 32kHz (out) O Sub clock output
36 TEST I test terminal
37 CAP RVS O Inverted capstan signal
38 I CONT O EURO 21 pin-I CONT signal output
39 MODE 4 I Cam encode data 4
40 MODE 3 I Cam encode data 3
41 MODE 2 I Cam encode data 2
42 MODE 1 I Cam encode data 1
43 REC PRF I Safety tab detection input
44 IIC CLK1 (EEP) O IIC clock (EEPROM control)
45 IIC DATA1 (EEP) I/O IIC data (EEPROM control)
46 CAM O Cam motor control signal
47 NC – Not used (open)
48 NC – Not used (open)
49 NC – Connected to Ground
Pin No. Pin Name I/O Function
50 OSC CHARA (IN) I/O Clock input for OSD character size
51 OSC CHARA (OUT) I/O Clock output for OSD character size
52 RESET I Reset input
53 OSD LPF I/O “External filter that doubles the FSC, is connected to this terminal”
54 LP O “L” at SP, “H” at EP/LP”
55 OSD VCC – Power supply input terminal for OSD/slicer (4.75 V to 5.25 V)
56 OSD V IN I Video signal input for OSD overlay
57 OSD GND – Ground terminal of OSD/slicer
58 OSD W LEVEL I OSD white level input
59 CLK SEL I
“Selection of oscillation clock when reset is canceled
“L”: sub clock, “H”: main & sub clocks”
60 MD0 – Connected to Ground
61 OSD V OUT O OSD video signal output
62 HLF (SLICER LPF) I/O
LPF connection terminal for slicer/AFC
(This terminal is used as the HLF terminal when C. Video is input to pin-56.)
63 OSD SECAM C IN I Color signal input for SECAM OSD
64 C V IN (C SYNC IN) I
“Video signal input for tuner’s station selection,
OSD and servo sync signal detection (after passing filter)”
65 DMS + I DMS 2-phase pulse 1 input
66 DMS - I DMS 2-phase pulse 2 input
67 TU SW1 O Tuner system BG/L selection signal
68 NC – Not used (open)
69 DEC/VTR O Decoder/VTR switching Not used (open)
70 PDC DAV I PDC/VPS signal reception identification input
71 AV CONT IN/C+DET I CANAL + connection identification input
72 DIV CLK OUT/JOGLED CONT O
Terminal of using JOG LED output or adjustment
made output of clock dividing frequency
73 TA MUTE O Tuner audio mute signal output
74 A MUTE O Audio mute signal output
75 MTR12V CONT O Motor 12 V power control signal
76 FROM AV LINK I AV-LINK data input for communication
77 REMOCON I Remote control SIRCS signal input
78 P FAIL I Power failure detection input
79 DRUM ERR O Drum error output
80 CAP ERR O Capstan error output
81 SAT CONT I SAT control signal
82 -11V CONT O Power save control
83 TO AV LINK O AV-LINK data output for communication
84 C+5V CONT O Power save control
85 NC – Not used (open)
86 FLD CLOCK O Serial clock CH0 (FLD)
87 18V CONT O 18 V power control signal
88 TO FLD DATA O Serial data out CH0 (FLD)
89 SECAM ON O SECAM ON signal/surround audio control (switched by destination)
90 FLD CS O Chip selection signal for display tube driver
91 SW5V CONT O SW 5 V power control signal
92 TU SW2 O Tuner system BGL/L selection signal
93 T REEL I Take up reel sensor input
94 S REEL I Supply reel sensor input
95 NC – Not used (open)
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