KD-S743R/KD-S741R
1-40 (No.49810)
4.10 UPD178078GF-593 (IC701) : System CPU
• Pin layout
• Pin function
80 ~ 51
1 ~ 30
50
~
31
81
~
100
Pin No.
Symbol
I/O
Function
1
STEERING REMOTE
I
Steering remote input
2~8
NC
-
No use
9
VOL-DA
I/O VOL IC communication line
10
VOL-CLK
O VOL IC communication line
11
NC
-
No use
12
LCD-DA
O LCD driver communication line
13
LCD-CLK
O LCD driver communication line
14,15
NC
-
No use
16
LCD-CE
O LCD driver communication line
17
SW2
I
CD mech switch
18
PSW
I
CD mech switch
19~22
NC
-
Not use
23
KEY0
I
Key input
24
KEY1
I
Key input
25
KEY2
I
Key input
26
LEVEL
I
Audio level input
27
AVDD
-
Power supply
28
SM
I
Signal level meter input
29
SQ
I
SQ level input
30,31
NC
-
Not use
32
AVSS
-
Connect to GND
33
REGCPU
-
Connect to GND with capacitor
-
Power supply
I
Connect to GND with capacitor
-
System clock
I
System clock
-
Connect to GND
I
Station detector & Stereo indicator
-
Connect to GND
-
No use
42
IFC
I
IF count input
43
VDDPLL
-
---
44
OSC INPUT
I
FM, AM OSC input
45
NC
-
No use
46
GNDPLL
-
---
47
AM E.OUT
O PLL error output for AM
48
FM E.OUT
O PLL error output for FM
49
IC(VPP)
-
Setting to write for flash
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
