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HCD-VX333
Q Q
6-23. IC PIN FUNCTION DESCRIPTION
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• MAIN BOARD IC401 M30622MAA (MASTER CONTROL)
Pin No.
Pin Name
I/O
1
S-OUT
O
Serial data output to the display control.
2
S-CLK
O
Serial clock output to the display control.
3
S-BSY
I
Busy signal input from the display control. "L" : busy
4
REMOTE IN
I
Remote commander input.
5
3878-DAT
O
Data signal output for IC301(BH3878KS2)
6
3878-LAT
O
Latch signal output for IC301(BH3878KS2)
7
3878-CLK
O
Clock signal output for IC301(BH3878KS2)
8
BYTE
—
Connected to ground.
9
CN VSS
—
Connected to ground.
10
XC IN
I
SUB SYSTEM CLOCK input.(32.768MHz)
11
XC OUT
O
SUB SYSTEM CLOCK output.(32.768MHz)
12
RESET
I
System reset input.
13
X OUT
O
MAIN SYSTEM CLOCK output.(16MHz)
14
VSS
—
Connected to ground.
15
X IN
I
MAIN SYSTEM CLOCK input.(16MHz)
16
VCC
—
Power supply.(+5V)
17
NMI
I
PULL UP.(EVER+5V)
18
AC-CUT
I
AC CUT ON(L)/OF(H) CHECK.
19
RCOR
I
CD Q-data request signal input.
20
RDS-INT
I
RDS interrupt signal input.
21
RDS-DATA
I
RDS data signal input.
22
ST-MUTE
O
Tuner mute signal output.
23
STEREO(IN)
I
STEREO detect signal input.L=ON,H=OFF
T E
L
1 3 9 4 2 2 9 6 5 1 3
24
TUNER
I
TUNER detect signal input.L=ON,H=OFF
25
ST-CE
O
TUNER chip eneble output.
26
ST-DOUT
O
TUNER data output.
27
ST-DIN
I
TUNER data input.
28
ST-CLK
O
TUNER clock signal output.
29
VCD
—
Not used.
30
VCD
—
Not used.
31
NO USE
—
Not used.
32
SQ-DAT IN
I
Subcode Q data input(CD data).
33
SQ-CLK
I
Subcode Q data input(CD clock).
34
SENS
I
BD condition signal input.
35
CD-DAT OUT
O
CD data output.
36
CAN'T-USE
—
Not used.
37
CD-CLK
O
CD clock output.
38
CD-POWER
O
CD-POWER ON/OFF signal output.H=ON,L=OFF
39
CLOCK-OUT
—
Not used.
40
HOLD
O
MODE signal input.
41
M-RESET
O
Micom reset signal output to the display control. "L" : reset
42
XLT
O
CD latch signal output.
43
XRST
O
CD reset signal output.
44
LOAD-IN
I
Loading motor control signal input.
45
LOAD-OUT
O
Loading motor control signal output.
46
OPEN
I
Tray open detect signal input.
w w w
47
CLOSE
I
Tray close detact signal input.
48
UP/DOWN
I
Pick-up up/down detect signal input.
49
T-SENS
I
CD table detect signal input.
50
GAME/DVD
—
Not used.
Description
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http://www.xiaoyu163.com
8
Pin No.
Pin Name
I/O
51
NO USE
—
Not used.
52
CENT-MUTE
—
Not used.
53
REAR-MUT
—
Not used.
54
494-DAT
—
Not used.
55
494-CLK
—
Not used.
56
494-LT
—
Not used.
57
SUR1
—
Not used.
58
SUR2
—
Not used.
59
SUR3
—
Not used.
60
A-TRG
O
A deck trigger control signal output.H=ON,L=OFF
61
B-TRG
O
B deck trigger control signal output.H=ON,L=OFF
62
VDD
—
Power supply.(+5V)
63
SOFT TEST
—
Not used.
64
VSS
—
Connected to ground.
65
CAMP-CONT
O
Capstan motor REV/FWD/STOP control signal output.H=REV,L=FWD/STOP
66
B-REC FWD
I
Detection input from the deck-B rec forward detect switch. "L" : rec
67
B-REC REW
I
Detection input from the deck-B rec reverse detect switch. "L" : rec
68
A-HAFE
I
A deck hafe detect signal input.
69
B-HAFE
I
B deck hafe detect signal input.
70
A-PLAY
I
A deck play detect signal input.
71
B-PLAY
I
B deck play detect signal input.
72
AMS-IN
I
AMS signal input.L=ON,H=OFF
73
DISPLAY KEY
O
DISPLAY KEY control signal output.
Q
Q
3
7
6
3
74
POWER-KEY
O
POWER KEY control signal output.
75
BIAS
O
BIAS ON/OFF signal output.H=ON,L=OFF
76
PB-A/B
O
Playback deck A/B select signal output.H=High,L=Normal
77
TC-RELAY
O
Tape deck relay ON/OFF signal output.H=ON,L=OFF
78
PB-MUT
O
PB mute ON/OFF signal output .H=ON,L=OFF
79
REC-MUT
O
REC mute ON/OFF signal output .H=ON,L=OFF
80
SP-LATA
O
Serial data latch pulse output to BH3878KS2 (IC301)
81
SP-LATB
O
Serial data latch pulse output to BH3878KS2 (IC301)
82
SP-LATC
O
Serial data latch pulse output to BH3878KS2 (IC301)
83
LINE-MUT
O
Line mute signsl output.L=ON,H=OFF
84
STK-MUT
O
Power amplifier mute ON/OFF signal output.H=ON,L=OFF
85
PROTECT
I
Speaker protect signal input.L=ON,H=OFF
86
STB-RELAY
O
STANDBY relay control signal output.
87
REAR-RELAY
O
Rear speaker relay control output.
88
FRONT-RELAY
O
Front speaker relay control output.
89
A-SHUT
O
A deck reel pulse detect signal output.
90
B-SHUT
O
B deck reel pulse detect signal output.
91
SP/VACS
I
Band pass filter signal input from the sound processor. (IC301)
92
MODE IN
I
MODEL
93
SPEC-IN
I
Version select signal input.
94
VIDEO SW2
O
Video switch control signal output to the video switch. (IC704)
95
VACS
I
Signal level input for the variable attenuation control system.
96
AVSS
—
Connected to ground.
97
POWER
O
POWER ON/OFF signal output.H=ON,L=OFF
u 1 6 3
98
AV-REF
—
Analog reference voltage.
99
AVCC
—
Power supply.(+5V)
.
100
S-IN
I
Serial data intput from the display control.
44
44
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4
9
9
8
Description
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5
1
5
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