Terminals Description - Panasonic CQ-DPX172U Service Manual

9 TERMINALS DESCRIPTION

9.1. Main Block
IC600 : C2BBGF000292
Pin Port
No.
1 INIT C Initial C
2 NC No connection
3 NC No connection
4 AVSS Analog ground
5 AF MUTE AF mute
6 AMP.CNT Power Amp. stand-by
7 AVREF Reference voltage
8 CD-SO CD data
9 CD-SI CD data
10 CD-SCK CD clock
11 CD.C DATA CD changer data
12 NC No connection
13 CD.C CLK CD changer clock
14 REM OUT CD changer remote cont. data
15 PLL CE PLL controller chip enable
16 PLL DATA Data from PLL
(MI)
17 PLL DATA Data for PLL
(MO)
18 PLL CLK Clock for PLL
19 NC No connection
20 NC No connection
21 CD-RESET CD reset
22 NC No connection
23 NC No connection
24 NC No connection
25 NC No connection
26 NC No connection
27 NC (GND pull-down)
28 CD-ON CD power on
29 CD-MUTE CD mute control
30 CD-SW2 Not used
31 NC No connection
32 NC No connection
33 Vss Ground
34 NC No connection
35 /ST FM stereo detection
36 IC2-CLK Electronic volume clock
37 IC2-DATA Electronic volume data
38 S.LED Not used
39 NC No connection
40 BZIN Not used
41 LCD-DI (MO) LCD data output
42 LCD-DO (MI) LCD data input
43 LCD-CLK LCD clock
44 LCD-CE LCD chip enable output
45 POWER Pilot lamp on
LED
46 ANT.CONT Motor antenna control
47 NC No connection
48 NC No connection
49 NC No connection
50 BZOUT Not used
51 NC No connection
52 NC No connection
53 NC No connection
54 NC No connection
55 PANEL Panel detect
56 CD POWER CD power control
57 PWR CNT Power control
58 ACC ACC detection
Description I/O (V)
I 4.9
-
-
-
O 5.1
O 5.0
- 5.1
I 3.2
O 3.8
O 5.0
O
-
O
O 5.0
O
I 5.1
O
O
-
-
O 5.0
-
-
-
-
-
-
O 5.0
I
-
-
-
-
-
I 4.5
O 5.0
I/O 5.0
-
-
-
O
I 5.0
O
O 0.2
O
O
-
-
-
-
-
-
-
-
I 4.8
O 5.1
O 5.1
I 5.0
59 RDS DATA Not used
60 /RESET Reset input
61 REM Remocon data input
62 BATT Battery detection
63 RDS CLK Not used
64 CD.C.STB (Ground pull-down)
65 MUTE Mute control
-
66 NC (Connecting to ground)
-
67 VSS0 (Connecting to ground)
0
68 VDD +5V power supply
69 X2 Crystal oscillator
70 X1 Crystal oscillator
71 VPP (Ground pull-down)
72 NC No connection
73 NC No connection
74 VDD0 +5V power supply
0
75 AVREF (Connecting to VDD)
-
76 NC (Connecting to ground)
0
77 SD Search detect
78 INIT D Initial value D
0
79 INIT A Initial value A
80 INIT B Initial value B
0
Note 1 : Voltage measuerments are with respect to ground,
with a voltmeter (internal resistance : 10M ohms).
0
-
-
9.2. Display Block
-
IC901 : YEAMLC75854T
-
-
Pin Port
-
No.
-
1-35 SEG9-35 LCD segment
0
36-39 NC No connection
40-43 COM1-4 LCD common
0
44-49 KS1-6 Key data output
-
50-54 KI1-5 Key data input
-
55 TEST (Connecting to ground)
-
56 VDD +5V power supply
0
57 VDD1 Ground through capacitor
-
58 VDD2 Ground through capacitor
59 Vss Ground
60 OSC CR oscillator
61 DO Key data output
-
62 CE Chip enable
-
63 CLK LCD clock
-
64 DI LCD data input
0
0
0
0
-
-
-
-
-
-
-
-
5
-
I 5.1
I 5.1
I 5.0
-
I
O 5.1
-
-
- 5.1
- 3.0
- 1.7
-
-
-
- 5.1
- 5.1
-
I 5.1
I
I
I
Description I/O (V)
O 2.5
-
O 2.5
O 0.9
I
-
- 5.1
- 3.3
- 1.7
-
- 3.9
O 4.4
I
I
I
CQ-DPX172U
-
-
0
0
0
0
-
-
0
0
0
0
-
0
0
0
0
0
0