Panasonic CQ-C7403U Service Manual page 13
Wma mp3 cd player/receiver
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Also See for CQ-C7403U:
- Operating instructions manual (114 pages) ,
- Operating instructions manual (119 pages)
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Pin
Port
Part Name & Description
No.
55
NC
Not connected
56
NC
Not connected
57
NC
Not connected
58
FLASH
Chip enable for Flash memory
CE
59
LCD
LCD chip select
CS
60
NC
Not connected
61
NC
Not connected
62
NC
Not connected
63
NC
Not connected
64
VLCD
Power control for LCD
CONT
65
NC
Not connected
66
NC
Not connected
67
NC
Not connected
68
NC
Not connected
69
OE/RD Output enable for Flash memory or
Read strobe for LCD
70
LCD
Write strobe for LCD
WR
71
FLASH
Write enable for Flash memory
WE
72
NC
Not connected
73
LCD
Reset for LCD
RESET
74
FLASH
Ready/Busy from Flash memory
RY/BY
75
RST
Reset
76
NC
Not connected
77
NC
Not connected
78
X0A
GND
79
VSS
GND
80
X0
System clock (12.5MHz)
81
X1
System clock (12.5MHz)
82
VCC
+3.3V Power supply
83
D0
D0 in Data bus
84
D1
D0 in Data bus
85
D2
D0 in Data bus
86
D3
D0 in Data bus
87
D4
D0 in Data bus
88
D5
D0 in Data bus
89
D6
D0 in Data bus
90
D7
D0 in Data bus
91
D8
D0 in Data bus
92
D9
D0 in Data bus
93
D10
D0 in Data bus
94
D11
D0 in Data bus
95
D12
D0 in Data bus
96
D13
D0 in Data bus
97
D14
D0 in Data bus
98
D15
D0 in Data bus
99
A16
A16 in Address bus
100 A17
A17 in Address bus
10.4. CD Servo Block
I/O
(V)
-
-
IC101 : YESAM337
-
-
Pin No.
Port
-
-
1
AVSS
O
3.4
2
LD-MT
3
CNT
O
3.4
4
-
5
LD-EJ
-
-
-
-
6
AMUTE
-
-
7
-
-
-
8
SBSY
O
3.4
9
-
10
-
-
-
-
-
11
TXD0
12
RXD0
-
-
13
CLK0
-
-
14
-
O
3.4
15
-
O
3.4
16
-
17
AMD
O
3.4
18
DVCC
19
X2
-
-
20
DVSS
O
3.4
21
X1
22
AMI
I
3.4
23
RESET
24
-
I
3.5
25
-
-
-
26
NMI
-
-
27
-
-
-
28
STBY
-
-
29
RST
I
1.3
30
CCE
O
1.5
31
BUCK
-
3.5
32
BUS3
I/O
0.9
33
BUS2
I/O
0.9
34
BUS1
I/O
1.1
35
BUS0
I/O
0.9
36
RESET
I/O
1.0
SW
I/O
1.1
37
SW1
I/O
1.1
38
SW2
I/O
0.9
39
CONT
I/O
0.9
(P13)
I/O
0.9
40
-
I/O
0.9
41
-
I/O
0.5
42
-
I/O
0.9
43
CONT
I/O
0.7
(P17)
I/O
0.7
44
PIO0
I/O
0.7
45
ZDET
O
3.0
46-49
-
O
1.7
50
-
51-58
-
59
CDFS
60
P50/AN0 Reference voltage
61
P51/AN0 Loading motor detect
62
P52/AN2
63
P53/AN3
64
AVCC
13
CQ-C7403U / CQ-C7303U / CQ-C7203U / CQ-C7103U
Descriptions
GND
Loading Motor drive IC control 1
Loading Motor drive IC control 2
-
Loading Motor drive IC control
(Eject)
Mute signal output
-
DSP IC SBSY
-
-
Serial data output
Serial data input
Clock input
-
-
-
-
Power supply (3.3V)
Crystal oscillator
GND
Crystal oscillator
-
Reset
-
-
-
-
DSP IC STBY
DSP IC RST
DSP IC CCE
DSP IC CK
DSP IC BUS3
DSP IC BUS2
DSP IC BUS1
DSP IC BUS0
Mechanics deck REST SW input
Mechanics deck SW1 input
Mechanics deck SW2 input
DSP IC power control 1
-
-
-
DSP IC power control 2
DSP IC PIO0
LOAD detect
-
-
-
Serial frame sink signal input
(CD ON)
-
-
Power supply (3.3V)
I/O
(V)
-
0
O
3.2
O
3.2
-
-
O
0
O
0
-
-
O
0
-
-
-
-
O
0
I
0
I
2.9
-
-
-
-
-
-
-
3.2
-
3.2
-
1.3
-
0
-
1.3
-
3.2
I
3
-
-
-
-
-
3.2
-
-
O
0
O
3.2
O
2.6
O
2.8
O
2.8
O
2.8
O
2.8
O
2.9
I
3.2
I
0
I
0
O
3.2
-
-
-
-
-
-
O
3.2
O
0
I
0
-
-
-
3.2
-
-
I
2.3
I
0.3
I
2.1
-
0
-
0
-
3.2
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