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MAZDA / CQ-JM8480K
7 TERMINALS DESCRIPTION
7.1.
Main Block
IC601 : C2CBHG000133
Pin
Port
No.
1
VOL. ENA Input A of VOL rotary
encoder
2
NC
3
NC
4
CD. SW1
NCD-9 SW1 input L: Disk.
5
CD. SW3
NCD-9 SW3 input L: Disk.
6
CD RESET CD reset signal output
(L:CD reset)
7
CD ON
CD deck power supply
control output H:CD deck
microcomputer
communication.
8
CD CLK
CD deck serial clock
output
9
CD D0
CD deck serial input
10
CD SIM
CD deck serial output
11
RESET
Microcomputer reset input
detection L:RESET
12
NC
13
NC
(Connecting to ground)
14
VSS
Ground
15
X2
Crystal oscillator terminal
16
X1
Crystal oscillator terminal
17
REG OFF
(Connecting to ground)
18
REGC
(Ground pull-down)
19
VDD
+5V power supply
20
JACK IN
AUX pin jack input
detection
21
JACK
Pin jack input signal
CONT
control output H: Pin jack
input OFF
22
NC
23
TP
Signal input for inspection
24
CL
LCD clock output
25
CE
LCD strobing output
26
DATA IN
Input for CD-R reading
27
DATA
Output for CD-R reading
CONT
28
NC
29
D2
LCD data input
30
D1
LCD data output
31
NC
32
NC
33
NC
34
NC
35
P. CONT
System power supply
control output H: System
power supply ON
36
LCD.
LCD backlight control
CONT
output H: Back light ON
37
SIYOU1
Destination setting input
(Thailand: L EX9K:H,
EX5K : H)
38
SIYOU2
Destination setting input
(Thailand: L EX9K:L ,
EX5K : H)
39
LED. CONT LED lighting output H:LED
ON (LED ON when CD is
inserted)
40
VSS
Ground
41
VDD
+5V power supply
42
COMBI.
AUX output signal
CONT
Descriptions
I/O FM
I
0
-
-
-
-
-
-
I
5.1
I
5.1
O
4.7
O
0
O
0
I
5.1
O
0
I
4.7
-
-
-
-
0
-
0
-
1.5
I
1.4
-
0
-
3.5
-
4.8
I
5.0
O
4.8
-
-
-
I
5.0
O
0
O
0
I
0
O
0
-
-
-
I
5.1
O
0
-
-
-
-
-
-
-
-
-
-
-
-
O
4.8
O
4.8
I
0
I
0
O
0
-
0
-
4.8
O
0
Pin
Port
No.
43
AUX.
CONT_IN
AM CD
44
E2P. DIN
45
E2P. DOUT E2P data output
0
0
46
E2P. CLK
47
E2P. STB
-
-
48
NC
-
-
49
TEL MUTE TEL signal input H:MUTE
5.1
0
5.1
0
50
VOL.. CLK Electron VOL clock output
4.7
4.7
51
VOL..
DATA
0
4.7
52
AMP. STBY Power amplifier control
53
NC
0
4.7
54
NC
55
NC
5.1
3.5
56
MUTE
0
1.6
57
BUSOUT
4.7
4.7
58
NC
59
NC
-
-
60
NC
0
0
61
NC
0
0
62
NC
1.5
1.5
63
NC
1.4
1.4
64
WP
0
0
3.5
3.5
4.8
4.8
65
SDA
5.0
5.0
66
NC
67
NC
4.8
4.8
68
SD
69
SCL
-
-
70
ST
5.1
5.0
0
0
71
NC
0
0
72
NC
0
0
73
IC
0
0
74
ST SW
-
-
75
V. CONT
5.1
5.1
0
0
76
CLIP DET
-
-
-
-
77
NC
-
-
78
NC
-
-
79
NC
4.8
4.7
80
NC
81
NC
82
AVDD
4.8
4.7
83
AVREF
0
0
84
AVSS
85
RX
0
0
86
OPEN
87
ACC. DET ACC detection input
0
4.7
88
NC
89
ILL DET IN ILL detection input H:ILL
0
0
4.8
4.8
90
NC
0
0
91
MBUS IN
92
CD. EJ
6
Descriptions
I/O FM
AUX input signal
I
E2P data input
I
O
E2P clock output
O
E2P strobing output
O
-
-
I
OFF from vehicle
O
Electron VOL data output
O
O
output H: Power amplifier
ON
-
-
-
-
-
-
MUTE output H:MUTE ON
O
M-BUS data output
O
-
-
-
-
-
-
-
-
-
-
-
-
Packing E2PROM write-
O
protection output signal H:
Write-protection solution
PLL data I/O signal
I/O 5.1
-
O
-
O
SD input H: No radio
I
station.
PLL data clock output
O
FM stereo input H:MONO
I
L:ST
-
-
-
-
(Ground pull-down)
O
Steering wheel SW signal
I
input
Input for radio field
I
strength judgment
Power IC offset detection
I
input
-
-
-
-
-
-
-
-
-
-
+5V power supply
-
Input terminal of reference
-
voltage of analog to digital
converter
Ground
-
Ground
-
-
-
I
H:ACC ON from vehicle
Ground
I
I
OFF from vehicle
(VDD pull-up)
I
M-BUS data input
I
CD EJECT key pressing
I
detection L:Eject key ON
AM CD
5.0
5.1
5.0
4.8
4.8
4.7
0
0
0
0
0
0
0
0
0
-
-
-
4.9
4.9
4.9
0
0
0
0
0
0
4.8
4.8
4.8
-
-
-
-
-
-
-
-
-
4.8
4.8
4.8
0
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
0
0
5.1
5.1
-
-
-
-
-
-
5.0
5.0
2.6
4.8
4.8
4.8
5.1
5.1
2.9
-
-
-
-
-
-
0
0
0
5.0
5.0
5.0
3.9
4.0
0
5.1
5.1
5.1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4.8
4.8
4.8
5.1
5.1
5.1
0
0
0
0
0
0
-
-
-
4.7
4.7
4.7
0
0
0
5.0
5.0
5.0
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
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