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3-7. SERVO/SYSTEM CONTROL MICROPROCESSOR (MA7 BOARD IC402) PORT FUNCTION DESCRIPTION
Pin No.
Signal
vo
Function
Pin No.
Signal
vo
Function
1 | RF SWP
© | RF switching pulse.
35 | CAP STOP
(© | Capstan stop reversal. L : Capstan stop.
2 | avd
© | False VD.
36 | FULLERS
© | Full erase control. (Not used. (GND))
3 | GHD ENBL
© | False HD voltage level control.
37 [ NC.
GND.
4 | AFRECP
(© | Hi-Fi recording control. (Not used. (open))
38 [ NC.
GND.
5 | NTSC
O | H:PAL.
39 | MP
| | Fixed to L.
6 | FEON
© | Flying erase. (Not used. (open))
40 | ASURARESET | | | System reset input.
7 | REC CTL
vo | REC CTL.
41 | vss
GND.
8 | CAP TROS
© | Capstan current control.
42 | XTAL
1 | System clock 16MHz.
9 | APc2
°
43 | EXTAL
© | System clock 16MHz.
10 | APCt
vo
44 | ASURACS
| | Chip select signal.
11 | NARECP.
vO | Normal audio recording mode. H : recording mode.
45 | SINO
1 | Serial communication signal.
12 | SPEP/LP
© | Tape speed control.
46 | SOUTO
© | Serial communication signal.
13 | CAMLOAD
VO | Loading motor rotaing direction control.
47 | SCLK
1 | Serial clock inpt.
14 | CAMUNLOAD | VO | Loading motor rotaing direction control.
48 | NICOLE ON
© | Notused. (open)
15 | CIN(RECPRF) | © | Cassette IN and erasing protection tad detection switch input.
49 | FMONOC
© | Not used. (open)
16 | RENTAL
VO | H: poor tape.
50 | EDIT
© | EDIT control. (Not used. (open))
17 | SECAM
© | H: SECAM (Not used. (open))
51 | TRINITRON
1 | GND.
18 | PALSP
(© | H: PAL (Not used. (open))
s2 | AVSS
1 | GND.
19 | 3.58 NTSC
} (© | Tuner, audio selection signal. H : 3.58 XTAL. (Not used. (open))
53 | AVREF
| AD port reference input. (UNSW 5V)
20 | NT JUDGE
1 | 4.43/3.58 judge input. (Not used. (open))
54 | AVDD
1 | uNsw sv.
21 | BLUE BACK ON | VO | H: ME SECAM (Not used. (open))
55 | APC ERROR
1 | AD input for APC 2.
22 | PAL60
© | H:HTSC on PAL TV. (Not used. (open))
56 | NTPBSW
1 |] GND.
23 | TVVTR
© | Notused. (open)
57 | DEST2(DEW) | | | Destination judge input. Fixed to L.
24 | AVCONT
© | ON/OFF control, (Not used. (open))
58 | DEST1
1 | Destination judge input.
25 | C+CONT
© | CANAL + control. (Not used. (open))
59 | AFENV
| | Hi-Fi audio playback signal envelope.
26 | BIL
© | H output: BS bilingual mode. (Not used. (open))
60 | RF ENV
| | Video playback signal envelope.
27 | MODE 4
1 | Cam encorder data 4.
61 | TSENS
1 | Tape top sensor input.
28 | MODE 3
1 | Cam encorder data 3.
62 | SSENS
| | Tape end sensor input.
29 | MODE 2
1 | Cam encorder
data 2.
63 | SREELFG
1 | S side reel FG input.
30 | MODE 1
1 | Cam encorder
data 1.
64 | TREEL FG
1 | Tide
reel FG input.
31 | CAM 12V
©. | CAM motor voltage change.
65 | NC.
Not used. (open)
32 | TYP LED
'© | Top/end detection lamp lighting control.
66 | VSYNC
1 | Composite sync input.
33 | CAP TRO2
© | Capstan current control signal 2. L : FF/REW to STOP.
67 | PBCTL
1 | Servo CTL input.
34 | CAPTRQ1
© | Capstan current control signal 1. L: SLOW speed down.
68 | DRMPG
t | Drum
PG input.
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