Read Panasonic CQ-JA1920L / CQ-JA1924L Service Manual online
9.1. Main Block
IC621 : C2CBKJ000009
Pin
No.
Port
Description
I/O
(V)
1
MD1
(Connecting to VDD)
-
5.2
2
MD2
MPU mode setting
I
4.4
3
NC
No connector
-
-
4
NC
No connector
-
-
5
CD RESET
CD reset
O
5.1
6
CD ON
CD controller enable
O
5.1
7
TIM-SP
TIM
O
0
8
TIM-ST
TIM strobe
O
0
9
VSS
Ground
-
0
10
TIM-REC/PLAY
TIM recode/play
O
0
11
VCC
+3V power supply
-
3.0
12
PLL CE
PLL chip enable
O
0
13
PLL CLK
PLL clock
O
0
14
PLL DI
PLL data
O
0
15
VSS
Ground
-
0
16
PLL DO
PLL data
I
4.9
17
PVCC1
+5V power supply
-
5.2
18
NC
No connector
-
-
19
DSP-SI
DSP serial data
O
0
20
DSP-CLK
DSP Clock for serial data
O
5.2
21
DSP-RST
DSP reset
O
0
22
DSP-WRQ
DSP data write request
O
0
23
DSP-WRDY
DSP write ready
I
0
24
DSP-CS
DSC chip select
O
5.1
25
6.5V-DET
6.5V detection
I
5.2
26
FLASH-TXD2
Not used
-
-
27
FLASH-RXD2
Not used
-
-
28
AF-MUTE
Audio mute control
O
5.1
29
VSS
Ground
-
0
30
MUTE1
Mute control
O
5.1
31
MUTE2
Mute control
O
5.1
32
F.IN
Tape loading motor control
O
0
33
R.IN
Tape loading motor control
O
0
34
CAN-IRQ
CAN BUS request
I
5.2
35
NC
No connector
-
-
36
NC
No connector
-
-
37
R.CONT
Radio power control
-
5.1
38
ILL1
Illumination signal
I
2.5
39
IF CONT
IF counter
O
5.1
40
CLK
Clock for the second display
O
0
41
DATA
Data for the second display
O
0
42
ENA-IN
Enable for the second display
I
0
43
ENA-OUT
Enable for the second display
O
5.1
44
E2-CLK
Clock
for
security
EEPROM
data
O
0
45
E2-DI
Security EEPROM data
O
0
46
E2-DO
Security EEPROM data
I
0
47
E2-CE
Security EEPROM enable
O
0
48
VSS
Ground
-
0
49
AMP+
Ext. Amp. control
O
5.1
50
PVCC1
+5V power supply
-
5.2
51
CLK
Clock for power control IC
O
0
52
DATA
Data for power control IC
O
0
53
LATCH
Data latch
O
5.1
54
STBY
Power control IC standby
O
5.1
55
COM-CNT
+10V power switch
O
5.1
56
MSOUT
Tape MS detection
I
3.9
57
T.LOAD
Tape loading
I
4.7
58
A/B
Tape side detection
I
0
59
T.IN
Tape insert detection
I
4.7
60
PVCC2
+5V power supply
-
5.2
61
+B DET
Battery level detection
I
4.8
62
VSS
Ground
-
0
63
CD REMO
CD CH remocon data
O
5.1
64
CD DATA
CD CH data
I
0
65
CD CLK
CD CH clock
I
0
66
CAN-TDO
CAN BUS data
I
0
67
VSS
Ground
-
0
68
VSS
Ground
-
0
69
CAN-RDI
CAN BUS data
O
4.8
70
S.CONT
Key status signal
I
5.2
71
P-ON SW
Power on SW
I
4.7
72
P-SI
Serial data for panel
O
5.1
73
P-SO
Serial data for panel
I
0
74
P-CLK
Clock for panel
O
5.1
75
NC
No connector
-
-
76
PLL VCC
PLL power supply
I
3.0
77
PLL CAP
Filter for PLL Vcc
-
1.5
78
PLL VSS
Ground
-
0
79
RES
Reset
I
4.7
80
MNI
(Connecting to VCC)
-
5.2
81
STBY
Power control IC standby
O
5.2
82
FWE
(Ground pull-down)
-
0
83
XTAL
Crystal oscillator
-
2.1
84
VCC
+3V power supply
-
3.0
85
XTAL
Crystal oscillator
-
1.7
86
VSS
Ground
-
0
87
OSC1
(Connecting to Vcc)
-
3.0
88
OSC2
Not used
-
-
89
PVCC1
+5V power supply
-
5.2
90
ILL2
Illumination signal
I
0
91
VSS
Ground
-
0
92
PANEL RESET
Reset output
O
5.2
93
CAN RESET
CAN BUS reset
O
4.8
94
GALA
GALA input
I
0
95
CONT
Control signal detection
I
4.7
96
S.REMOCON
Remocon data
I
5.1
97
ANT CNT2
Motor antenna control
O
5.0
98
R CLK
Clock for RDS data
I
2.5
99
NC
No connector
-
-
100
NC
No connector
-
-
101
AVCC
+5V power supply
-
5.2
102
VREF
Reference voltage terminal
-
5.2
103
VCONT
AM/FM level detection
I
0
104
MP
Multi-path detection
I
0
105
NOISE
FM noise level detection
I
1.7
106
DSP-MON
(+5V pull-up)
I
4.4
107
IGN
IGN signal input
I
5.2
108
T.MUTE
Telephone mute
I
4.7
109
N. CONT
Navi control
I
4.7
110
R DATA
RDS data
I
2.5
111
CD-EJECT
CD eject SW
I
4.7
112
E-A
Tape end detection
I
0
113
E-B
Tape end detection
I
0
114
EQ
Metal tape detection
I
0
115
Bit 3
Tape mode SW
I
0
116
Bit 2
Tape mode SW
I
0
117
Bit 1
Tape mode SW
I
0
118
TA.MON
TA monitor
I
0
119
AVSS
Ground
-
0
120
TIM-CA0
TIM phrase setting
O
0
121
TIM-CA1
TIM phrase setting
O
0
122
TIM-CA2
TIM phrase setting
O
0
123
TIM-CA3
TIM phrase setting
O
0
124
TIM-DEL
TIM delete
O
5.1
125
CD SCKM
CD serial clock
I
0
9 TERMINALS DESCRIPTION
8
AUDI / CQ-JA1920L / CQ-JA1924L
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