Read Panasonic CQ-JA1920L / CQ-JA1924L Service Manual online
69
AVDD1
+5V power supply
-
4.9
70
AOUT1
Lch audio output
O
2.0
71
AIN1
Lch OP-amp input
I
2.0
72
LOUT1
Lch line-out
O
2.0
73
AVSS1
Ground
-
0
74
AVSS2
Ground
-
0
75
LOUT2
Rch line-out
O
2.0
76
AIN2
Rch OP-amp input
I
2.0
77
AOUT2
Rch audio output
O
2.0
78
AVDD2
+5V power supply
-
4.9
79, 80 -
Not used
-
-
IC451 : C2BBFC000021
Pin No.
Port
Description
I/O
(V)
1
NC
No connection
-
-
2
SQSO
Sub Q-cord data
I
0.5
3
CLKOFF
LSI clock stop
O
5.0
4
SCKM
Data shift clock
O
5.0
5
MUTE
Analog mute
O
0
6
SOM
Serial data
O
0
7
PLLOFF
Not used
-
-
8
SIM
Serial data
I
1.5
9
TNNER
Inner switch
I
4.4
10
OUT
Disc-out detection
I
4.2
11
IN
Disc-in detection
I
4.2
12
CLAMP
Disc clamp detection
I
0
13
PC0
Spindle motor driver on/off
I/O
0
14
PC2
Loading motor driver on/off
I/O
5.1
15
VREF
+5V power supply
-
5.1
16,17 NC
No connection
-
-
18
XIN
Crystal oscillator
-
1.8
19
XOUT
Crystal oscillator
-
2.6
20
NC
No connection
-
-
21
AVSS
Ground
-
0
22
VSS
Ground
-
0
23
VCC
+5V power supply
-
5.1
24
NC
(Connecting to ground)
-
0
25
XCIN
Not used
-
-
26
LOCK
Spindle PLL lock detection
I
4.5
27
NC
No connection
-
-
28
/RST
CPU reset
I
4.8
29
NC
No connection
-
-
30
CDON
CPU operation enable
I
0
31
ATSK
Anti-shock signal
I
0
32
FOK
RF level detection
I
4.5
33
MIRR
Mirror signal detection
I
0
34
ATSK
Anti-shock signal
I
0
35
LOD
Loading motor control
I/O
2.3
36
PC1
Actuator motor drive on/off
I/O
0
37
MODE
Access mode selection
O
0
38
SCLK
SENS read clock
O
5.1
39
SENS
Servo LSI status
I
0.7
40
CLOK
Servo LSI data shift clock
O
4.1
41
XLAT
Serial data latch
O
5.0
42
DATA
Serial data
O
3.5
43
SYSM
LSI mute
O
0
44
NC
No connection
-
-
45
CDON
Not used
-
5.0
46- 49
-
Not used
-
-
50
/RST
Not used
-
4.8
51
VSS
Ground
-
0
52
P53
Not used
-
-
53
XRST
Servo LSI reset
O
5.1
54
SQCK
Sub Q-cord read clock
O
5.1
55,56
-
Not used
-
-
11
AUDI / CQ-JA1920L / CQ-JA1924L
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