JVC KD-LX300 Service Manual page 22

KD-LX300/KD-LX100
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UPD784215AGC-128 (IC701) : UNIT CPU
1.Terminal Layout
75 ~ 51
76
100
1 ~ 25
2.Pin Function (1/2)
Symbol
Pin No.
1
SW2
2
SW3
3
SW4
4
REST-SW
5
LM0
6
LM1
7
DIMMER-OUT
8
LCD-PWR
9
VDD
10
X2
11
X1
12
VSS
13
XT2
14
XT1
TE
L 13942296513
15
RESET
16
SW1
17
BUS-INT
18
PS2
19
CRUISE
20
NC
21
NC
22
REMOCON
23
AVDD
24
AVREF0
25
VOL1
26
VOL2
27
KEY0
28
KEY1
29
KEY2
30
LEVEL
31
NC
32
S.METER
33
AVSS
34
W-VOL
35
DOT-CONT
36
AVREF
37 www
BUS-SI
38
BUS-SO
39
BUS-SCK
40
STAGE2
41
LCD-DA
42
LCDCL
1-22
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50
26
I/O
Detection switch of CD mechanism
I
Detection switch of CD mechanism
I
Detection switch of CD mechanism
I
Reset signal input from CD mechanism
I
Loading motor control signal output
O
Loading motor control signal output
O
Dimmer signal output
O
LCD driver power supply control output
O
Power supply terminal
-
Connecting the crystal oscillator for system main clock
-
Connecting the crystal oscillator for system main clock
-
Power supply terminal
-
Connecting the crystal oscillator for system sub clock
-
Connecting the crystal oscillator for system sub clock
-
System reset signal input
I
Detection switch of CD mechanism
I
Cut-in input for J-BUS signal
I
Power save 2, Working together back up by H input, to stop mode
I
Pulse signal input port for Cruise control
I
Clock signal input for RDS
-
RDS data input
-
Remote control signal input
I
Power supply terminal
-
Power supply terminal
-
Input for rotation volume detection pulse judgment to relation V1
I
Input for rotation volume detection pulse judgment to relation V2
I
Key control signal input 0
I
Key control signal input 1
I
Key control signal input 2
I
Signal input port of level meter
I
Non connect
I
S.Meter level input
I
Connect to GND
-
Subwoofer volume control analogue output
O
Dot contrast signal output
O
Power supply terminal
-
J-BUS data input
I
J-BUS data output
O
x ao
y
J-BUS Clock signal I/O
I/O
Initial setting
I
. i
Data output to LCD driver
O
Clock output to LCD driver
O
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Function
H:ON
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