(Ma-335 Board Ic161); Servo/System Control Microprocessor Pin Functions (Ma-335 Board Ic161) - Sony SLV-M10HF Service Manual

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5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS

(MA-335 BOARD IC161)

Pin No. Pin Name
1 RF SWP
2 AF REC P
3 N.C.
4 QVD
5 AUTO PRESET
6 FE ON
7 REC CTL
8 CTL RESET
9 CAM 2
10 N.C.
11 TA MUTE
12 S-VHS
13 NT JUDGE
14 MESECAM DET
15 CIN (REC PRF)
16 AV CONT
17 SECAM ON
18 SW1
19 MODE 4
20 MODE 3
21 MODE 2
22 MODE 1
TE
L 13942296513
POWER SAVE
23
CONT 1
POWER SAVE
24
C+
25 MOD CONT
26 TV/VTR
27 N.C.
28 SDA 0
29 N.C.
30 SCL 0
31 A MUTE
32 T/E LED
33 N.C.
34 N.C.
35 CAP STOP
36 FULL ERS
37 N.C.
38 N.C.
39 MP
40 ASURA RESET
41 VSS
42 XTAL
43 EXTAL
44 ASURA CS
45 S IN 0
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46 S OUT 0
47 SCLK
48 NICOL ON
.
49 CBC POWER
50 F. MONO
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I/O Function
O RF switching pulse output.
O "H" when HiFi audio REC.
— Not used.
O Quasi VD pulse output.
"H" during auto preset.
O
O Flying erase ON/OFF
O REC CTL signal output.
Capstan current control. "H" during
O
slow mode.
I Cam motor control.
Not used.
—
O Tuner audio mute. H: Mute
I S-VHS tape detection signal in.
I Not used.
I Not used.
Erasing protection tab, cassette in
I
detection signal input.
O Not used.
— Not used.
— Not used.
I Cam encoder signal input.
I Cam encoder signal input.
Cam encoder signal input.
I
Cam encoder signal input.
I
O Not used.
O Not used.
O Not used.
TV/VTR control signal output.
O
— Not used.
2
I/O I C data.
— Not used.
2
I/O I C clock.
O "H" when audio mute.
Tape top/end sensors driver.
O
— Not used.
— Not used.
O Capstan stop signal output.
O Full erase control.
— Not used.
Not used.
—
I Fixed to "L".
I System reset signal.
— Ground.
O System clock 16MHz.
I System clock 16MHz.
Servo/system control microcomputer
I
chip select signal.
I Serial communication signal.
O Serial communication signal.
I Serial communication signal.
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O NICOL control signal out.
i
O Cable box control signal out.
Forced mono.
O
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2 9
8
Pin No. Pin Name
51 SW2
52 AVSS
53 AVREF
54 AVDD
55 NTPB SW
56 AV ADJ
57 FOLLOW TV
58 N.C.
59 AF ENV
60 RF ENV
61 T SENS
62 S SENS
63 S REEL FG
64 T REEL FG
65 N.C.
66 VSYNC
67 PB CTL
68 DRM PG
69 DRM FG
70 CAP FG
BLUE BACK
71
ON
72 CAP RVS
Q Q
3 6 7 1 3 1 5
73 CAP DA
74 DRM DA
75 N.C.
76 N.C.
77 REC COUNT
78 C PLUS DET
79 N.C.
80 DATA (SSB)
81 CLOCK (SSB)
82 N.C.
83 N.C.
84 CAP TRQ PWM
85 N.C.
86 N.C.
87 N.C.
88 VSS
89 VDD
90 5V
91 N.C.
92 CTL HYS HIGH
93 N.C.
94 N.C.
95 N.C.
96 AF REC
97 N.C.
98 N.C.
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99 STEP PLS
.
100 AF SWP
5-3
9 4 2 8
I/O Function
O Not used.
— Unswitched ground.
— AD port reference input UNSW 5V.
— UNSW 5V.
I Not used.
I Adjustment mode.
I Not used.
— Not used.
I HiFi audio playback signal envelope.
I Video playback signal envelope.
I Take-up end sensor.
I Supply end sensor.
I Supply reel FG input.
I Take-up reel FG input.
— Not used.
I Composite sync. signal input.
I Playback CTL input.
I Drum PG input.
I Drum FG input.
I Capstan FG input.
O Not used.
Capstan reverse control "H" when
O
reverse.
0 5 8 2 9 9 4 2 8
O Capstan error D/A output.
O Drum PG output.
— Not used.
— Not used.
I Counter signal input when recording.
O Not used.
— Not used.
O Serial communication data.
O Serial communication clock.
— Not used.
— Not used.
PWM output for capstan torque
O
control.
— Not used.
— Not used.
— Not used.
— Ground.
— 5V.
— 5V.
— Not used.
O CTL amp gain control.
— Not used.
— Not used.
— Not used.
O "H" output when hifi audio recording.
— Not used.
m
— Not used.
Step pulse "H" when capstan step
O
driving.
O AF switching pulse output.
9 9
9 9