Sony SLV-999HF Service Manual page 63

5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS
(MA-360 BOARD IC161)
Pin No. Pin Name I/O
1 RF SWP O
2 AF REC P O
3
AF REC O
4 QVD O
5 AUTO PRESET O
6 FE ON O
7 N.C
8 L.LINK O
9 CAM 2 I
10 N.C
11 TA MUTE O
12 N.C
13 N.C
14 N.C
15 CIN (REC PRF) I
16 AV CONT
17 N.C
18 MODE 4 I
19 MODE 3 I
20 MODE 2 I
21 MODE 1 I
22 ENV SW I
23 S IN 0 I
24 S OUT 0 O
25 S CLK I
26 ASURA CS I
27 SERVO O
28 CAP TRQ PWM O
29 N.C
30 CAP RVS O
31 A MUTE O
32 T/E LED O
33 CAP STOP O
34 FULL ERS O
35 N.C
36 I2C DATA I/O
37 N.C
38 I2C CLOCK I/O
39 MP —
40 ASURA RESET I
41 GND —
42 XTAL O
43 EXTAL I
44 N.C —
45 DRUM PG I
46 DRUM FG I
47 CAP FG I
48 NICOL ON O
49 CBC POWER O
50 F MONO O
Function
RF switching pulse output.
"H" when HiFi audio REC.
"H" output when HiFi audio
recording.
Quasi VD pulse output.
"H" during auto preset.
Flying erase ON/OFF.
Not used.
Laser Link control out.
Cam motor control.
Not used.
Tuner audio mute. H: Mute
Not used.
Not used.
Not used.
Erasing protection tab, cassette in
detection signal input.
Not used.
Not used.
Cam encoder signal input.
Cam encoder signal input.
Cam encoder signal input.
Cam encoder signal input.
Video envelope mode detect signal
(SP or EP)
Serial communication signal.
Serial communication signal.
Serial communication signal.
Servo/system control microcomputer
chip select signal.
Not used.
PWM output for capstan torque
control.
Not used.
Capstan reverse control "L" when
reverse.
"H" when audio mute.
Tape top /end sensors driver.
Capstan stop signal output.
Full erase control.
Not used.
Serial communication data.
Not used.
Serial communication clock.
Ground.
System reset signal.
Ground.
System clock (16 MHz).
System clock (16 MHz).
Ground.
Drum PG input.
Drum FG input.
Capstan FG input.
NICOL control signal out.
Cable box control signal out.
Forced mono.
Pin No. Pin Name
51 SW2
52 GND
53 VDD
54 VDD
55 N.C
56 AV ADJ
57 N.C
58 N.C
59 AF ENV
60 RF ENV
61 T SENS
62 S SENS
63 VDD
64 AMP VSS
65 CTL HEAD (Y)
66 CTL HEAD (X)
67 HEADL (+)
68 HEADL (–)
69 CTL FAMPI (+)
70 CTL FAMPI (–)
71 CTL AGND
72 CTL SAMPI
73 CTL FAMPO
74 AMP VDD
75 ANOUT
76 S REEL FG
77 T REEL FG
78 CAP DA
79 DRM DA
80 N.C
81 N.C
82 VSYNC
83 N.C
84
18 V_CONT
85
24 V_CONT
86 TEX
87 TX
88 VSS
89 VDD
90 VDD
91 FAST SEARCH
92 HA SWP
93 C ROT
94 POWER SAVE CONT
95 POWER SAVE C+
96 MOD CONT
97 SP
98 TV/VTR
99
STEP PLS
100 AF SWP
5-3
I/O Function
O Not used.
— Ground.
I UNSW 5 V.
I UNSW 5 V.
— Ground.
I Adjustment mode.
— Ground.
— Ground.
I HiFi audio playback signal envelope.
I Video playback signal envelope.
I Take-up end sensor.
I Supply end sensor.
I UNSW 5 V.
— Ground.
I/O CTL signal I/O.
I/O CTL signal I/O.
O CTL signal.
O CTL signal.
I CTL first AMP input.
I CTL first AMP input.
O Ground.
I CTL second AMP input.
O CTL first AMP output.
I 5 V.
O Control signal output for check pin.
I Supply reel FG input.
I Take-up reel FG input.
O Capstan error D/A output.
O Drum error D/A output.
UNSW 5 V.
— Ground.
I Composite sync signal input.
Not used.
18 V control, when the high speed
O
mode.
24 V control, when the high speed
O
mode.
Not used.
Not used.
— Ground.
I UNSW 5 V.
I UNSW 5 V.
CTL level control signal "L" when
O
high speed mode.
Video head switching pulse signal
O
output.
O Color rotate pulse signal output.
O Not used.
O Not used.
O Not used.
Tape speed mode control signal "L"
O
when SP mode.
O TV/VTR control signal output.
Step pulse "H" when capstan step
O
driving.
O AF switching pulse output.