Pioneer AVIC-N2 Service Manual page 283

5
* PD6473A(UC model)
* PD6472A(EW model)
A15 1
A14
2
A13 3
A12
4
A11
5
LOW VCC
A10 6
DETECT
CIRCUIT
A9
7
A8
8
N.C. 9
N.C.
10
CONTROL
WE
11
CIRCUIT
(COMMAND
RESET
12
REGISTER)
N.C.
13
N.C.
14
RY/BY 15
N.C. 16
A17
17
A7 18
RY/BY
BUFFER
A6
19
A5
20
A4
21
A3
22
A2
23
A1 24
- 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 REM
18 DPDT
19 NC
20 KYDT
21 MODA
22 XO
23 XI
24 VSS
25,26 KDT2,3
27,28 KST5,4
29-55 SEG39-13
56 VDD
57-64 SEG12-5
* PD6340A
48 33
49 32
64 17
1 16
5
6
A-1
4,194,304
X
CELL
DECODER
ADDRESS
MATRIX
LATCH
Y
STB YGATE
DECODER
DATA
LATCH
STB
WRITE ERASE
CIRCUIT CIRCUIT
CHIP ENABLE
WRITE/ERASE
OUTPUT ENABLE
PULSE TIMER
CIRCUIT
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
O
Key strobe output
O LCD segment output
Power supply
O LCD segment output
AVIC-N2/XU/UC
6
7
48 A16
47 BYTE
46 V
SS
45 DQ15/A-1
44 DQ7
43 DQ14
42 DQ6
41 DQ13
40 DQ5
39 DQ12
38 DQ4
37 V
CC
36 DQ11
35 DQ3
34 DQ10
33 DQ2
32 DQ9
31 DQ1
30 DQ8
29 DQ0
28 OE
27 V
SS
26 CE
25 A0
7
8
A
B
C
D
E
F
283
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