CQ-EF7380A - Panasonic Car Audio Service Manual (repair manual). Page 9

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70
CSEL
(Connecting to ground)
-
0
71
PMCK
Clock output
O
2.5
72
SMCK
Clock output
O
2.5
73
SUBC
Serial data of sub code
O
0
74
SBCK
Shift clock for SUBC
I
0.6
75
/CLDCK
Not used
-
-
76
/TEST
(Connecting to VDD)
-
5.0
77
X1
Crystal oscillator
-
0.4
78
X2
Crystal oscillator
-
3.2
79
VDD1
+5V power supply
-
5.0
80
VSS1
Ground
-
0
IC301 : MN1873260AE
Pin
No.
Port
Description
I/O
(V)
1
VDD
+5V power supply
-
5.0
2
OSC2
Crystal oscillator
-
2.2
3
OSC1
Crystal oscillator
-
2.1
4
VSS
Ground
-
0
5
XI
(Connecting to ground)
-
0
6
XO
Not used
-
-
7
CM
(Connecting to ground)
-
0
8
VREFH
Reference voltage
I
5.0
9
SW13
Shuter SW
I
4.9
10
SW12
Horizontal origin
I
4.9
11
SW11
Clump SW
I
0
12
SW10
Play SW
I
0
13
SW4
Shuter SW
I
4.9
14
SW3
Tray origin SW
I
0
15
SW2
Inner SW
I
4.8
16
SW1
Outer SW
I
4.9
17
VREFL
(Connecting to Ground)
-
0
18
/RESET
Reset input
I
4.9
19
-
(Ground pull-down)
-
0
20
SCKM
Clock for serial data
I
5.0
21
SIM
CD changer serial data
I
1.3
22
SOM
CD changer serial data
O
4.3
23
SQCK
Ext. clock for sub. code-Q
O
5.0
24
SUBQ
Code for sub. code-Q
I
1.6
25
-
Not used
-
-
26
-
(Ground pull-down)
-
0
27
CD.ON
CD changer start/stop
I
5.0
28
-
Not used
-
-
29
BLKCK
Sub. code block clock
I
0
30
P.ON
In operation CPU
O
5.0
31
MUTE
Mute output
O
5.0
32
-
(Ground pull-down)
-
0
33
SENS
Servo status
O
0
34
CLVS
Servo status
O
5.0
35
FLOCK
Focus servo lock
O
0.2
36
TLOCK
Tracking servo lock
O
0
37
VMI
Horizontal motor control
O
2.5
38
HMI
Vertical motor control
O
0
39
HVMUTE
H/V motor mute
O
0
40-42
-
(Ground pull-down)
-
0
43
SW9
Disc-in (B) SW
I
0
44
SW8
Disc-in (L) SW
I
0
45
SW7
Disc-in (F) SW
I
0
46
SW6
Disc push SW
I
0
47
SW5
Tray hight SW
I
4.5
48
BDO
Drop-out signal
I
0
49
DQSY
Not used
-
-
50
/RST
Reset output
O
5.0
51
STAT
Status signal
I
2.1
52
DMUTE
Mute output
O
0
53
XE
Not used
-
-
54
P.DOWN
Power down signal
O
0
55
-
No connection
-
-
56
MLD
I/F command load
O
5.0
57
MDATA
Data for I/F command
O
3.1
58
MCLK
Clock for I/F command
O
4.1
59
SPMT
Spindle mute
O
5.0
60
MUTE12
Focus/Tracking mute
O
0
61
MUTE4
Loading motor mute
O
4.8
62
LDOI
Loading motor control
I/O
2.5
63
TRV
Forced traverse control
I/O
2.4
64
SYNC
Not used
-
-
9
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