Terminals Description - Panasonic CQ-C1401U Service Manual
Wma mp3 cd player/receiver with cd
changer control
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Also See for CQ-C1401U:
- Operating instructions (2 pages) ,
- Operating instructions manual (25 pages) ,
- Installation instructions (2 pages)
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9 TERMINALS DESCRIPTION
9.1.
Main Block
IC601 : YESAM276
Pin
Port
Description
No.
1
(NC)
-
2
VSM
Radio signal strength
3
SD/ST
Radio station detect
4
AVSS
Ground
5
SCL
Audio control serial clock
6
SDA
Audio control data
7
AVREF
(Conecting to +5V)
8
CD SO
CD data output
9
CD SI
CD data input
10 CD SCK
CD clock
11 CDC DATA/
CD changer data/XM
XM-TX SO
radio TX signal
12 XM-RX SI
XM radio RX signal
13 CDC CLK
CD changer clock
14 CDC REM
CD changer remote
15 BZ OUT (NC)
-
16 LCD DO
LCD data
17 LCD DI
LCD data
18 LCD CLK
LCD Clock
19 CD MUTE
CD mute
20 CD RST
CD reset
21 CD STB
CD strobe
22 CDC SENS
-
(NC)
23 PLL DO
PLL data
24 PLL CLK
PLL data clock
25 PLL DI
PLL data
26 PLL CE
PLL chip select
27 (NC)
-
28 (NC)
-
29 (NC)
-
30 (NC)
-
31 (NC)
-
32 (NC)
-
33 VSS1
Ground
34 RDS DATA
-
(NC)
35 S-LED (NC)
-
36 LCD CE
LCD chip enable
37 LCD 5V CNT
Display 5V control
38 (NC)
-
39 (NC)
-
40 (NC)
-
41 (NC)
-
42 ROTARY 1
Rotary encoder input 1
43 ROTARY 2
Rotary encoder input 2
44 (NC)
-
45 (NC)
-
46 PANEL
Panel detection
47 STBY
Power IC stundby control
48 EEPROM CE
-
(NC)
49 EEPROM SK
-
(NC)
50 EEPROM DI
-
(NC)
51 EEPROM DO
-
(NC)
52 (NC)
-
53 INV CNT
Illumination control
54 AMP CNT
Amp power control
Pin
No.
55 ANT CNT
56 EXT.MUTE
I/O
(V)
57 MAIN CNT
FM AM CD
58 AMP MUTE
-
-
-
-
59 AF MUTE
I
0
0
0
60 RESET
I
0.3
0
0.8
61 RDS CLK (NC) -
-
0
0
0
62 (NC)
O
4.9 4.9 4.9
63 (NC)
O
4.9 4.9 4.9
64 RM DATA
-
4.9 4.9 4.9
65 BATT
I
2.1 2.3 1.7
66 CDC STB/
O
0
0
3.3
XM DET
O
4.7 4.7 4.7
67 VSS0
I
0
0
0
68 VDD1
69 X2
O
4.8 4.8 4.8
70 X1
I
0
0
0
71 TEST
O
4.8 4.8 4.8
72 XT2
-
-
-
-
73 XT1
I
4.8 4.8 4.8
74 VDD0
O
4.7 4.7 4.7
75 AVDD
O
4.8 4.8 4.8
76 INI A
I
0
0
4.8
77 INI B
O
4.8 4.8 4.8
78 ACC
I
3.7 3.7 3.7
79 (NC)
-
-
-
-
80 LEVEL
I
4.9 4.9 4.9
O
4.8 4.8 4.8
O
0
0
0
9.2.
O
0
0
0
-
-
-
-
IC901 : YEAMLC75854T
-
-
-
-
-
-
-
-
Pin
-
-
-
-
No.
-
-
-
-
1-35 SEG1-35
-
-
-
-
36-39 NC
-
0
0
0
40-43 COM1-4
-
-
-
-
44
45-49 KS2-6
-
-
-
-
50-54 Kl1-5
O
0
0
0
55
O
0
0
0
56
-
-
-
-
57
-
-
-
-
58
-
-
-
-
59
-
-
-
-
60
I
4.8 4.8 4.8
61
I
4.7 4.7 4.7
62
-
-
-
-
63
-
-
-
-
64
I
4.6 4.6 4.6
O
4.8 4.8 4.8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
O
4.8 4.8 4.8
O
4.8 4.8 4.8
5
Port
Description
Antenna power control
External mute
Main power control
Amp mute control
AF mute control
Reset
-
-
Remote control data
Battery voltage detection
CD Changer strobe/ XM
receiver detection
Ground
+5V power supply
Crystal oscillator
Crystal oscillator
(TEST terminal)
Crystal oscillator
Crystal oscillator
+5V power supply
+5V power supply
Mode setting A
Mode setting B
ACC detection
(Connecting to ground)
(Connecting to ground)
Display Block
Port
Description
LCD segment data
LCD common
KS1
Not used
Key scan
Key data
TEST
(Connecting to ground)
VDD
+5V power supply
VDD1
VDD1 filter terminal
VDD2
VDD2 filter terminal
VSS
Ground
OSC
Oscillator terminal
DO
Key data output
CE
LCD driver chip enable
CLK
LCD clock
DI
LCD data
CQ-C1401U / CQ-C1301U
I/O
(V)
FM AM CD
O
4.8 4.8 4.8
O
4.8 4.8 4.8
O
4.8 4.8 4.8
O
4.8 4.8 4.8
O
4.8 4.8 4.8
I
4.8 4.8 4.8
-
-
-
-
-
-
-
-
-
-
-
-
I
4.8 4.8 4.8
I
4.5 4.5 4.5
I
4.8 4.8 4.8
-
0
0
0
-
4.8 4.8 4.8
-
2.9 2.9 2.9
-
2.3 2.3 2.3
-
0
0
0
-
2.7 2.7 2.7
-
2
2
2
-
4.9 4.9 4.9
-
4.8 4.8 4.8
I
0
0
0
I
4.8 4.8 4.8
I
4.9 4.9 4.9
-
0
0
0
-
0
0
0
I/O
(V)
O
2.5
-
-
-
O
2.5
-
-
O
5.0
I
0
-
0
-
5.0
-
3.3
-
1.7
-
0
-
3.9
O
5.0
I
0
I
4.9
I
4.9
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