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
34 VDD - Power supply
35 REGOSC I Connect to GND with capacitor
36 X2 - System clock
37 X1 I System clock
38 GND0 - Connect to GND
39 SD/ST I Station detector & Stereo indicator
40 GND2 - Connect to GND
41 NC - 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
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
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
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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