Pioneer DEH-3900MP Service Manual page 57

5
- Pin Functions(PD6340A)
Pin No. Pin Name
1-5 SEG4-0
6-9 COM3-0
10 VLCD
11-14 KST3-0
15,16 KDT0,1
17 REW
18 DPDT
19 NC
20 KYDT
21 MODA
22 X0
23 X1
24 VSS
25,26 KDT2,3
27 NC
28 KST4
29-32 NC
33-55 SEG35-13
56 VDD
57-64 SEG12-5
PD6340A
64
49
GP1UX51RK
- Block Diagram
Amp Limiter
PE5547A
109
144
5
6
I/O Function and Operation
O LCD segment output
O LCD common output
LCD drive power supply
O Key strobe output
I Key data input (analogue input)
I Remote control reception input
I Display data input
Not used
O Key data output
GND
Crystal oscillator connection pin
Crystal oscillator connection pin
GND
I Key data input
Not used
O Key strobe output
Not used
O LCD segment output
Power supply
O LCD segment output
17
32
Demodulato Integrator Comparator
B.P.F
72
37
DEH-3900MP/XN/EW5
6
7
- Pin Layout
RL
2 3 1
GND VCC vout
Format
C
N
7
8
1 2 3
vout GND VCC
Meaning
CMOS
Nch open drain
57
8
A
B
C
D
E
F