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Kenwood KDC-9026R Service Manual page 9

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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
PANEL MICROPROCESSOR : 703132GJ011-A (X16-253 : IC1)
Pin No.
Pin Name
1~7
D14~D8
8
3.3VDD
9
VSS
10~17
D7~D0
18
FL GCP1
19
SC REQ
20
MC REQ
21
SC CON
22
FL BLK
23
2.5V VDD
24
VSS
25~27
KS5~KS3
28,29
TDI/TDO
30,31
KS2,1
32
TRST
33
ROTARY CCW
TE
34
ROTARY CW
L 13942296513
35,36
TMS/TCM
37
3.3VDD
38
VSS
39~42
KI1~KI4
43
FLGCP2
44
NC
45
SYS TX
46
SYS RX
47
FL CLK3
48
KI5
49
FL DATA3
50
SCK1
51
NC
52
FL DATA2
53
CLK IN1
54
NC
55
FL DATA1
56
3.3VDD
www
57,58
X2/X1
59~61
CVSS/CKSEL/PSEL
.
62
2.5V VDD
63
VSS
I/O
I/O
External ROM data input/output terminal
-
AVR 3.3V
-
GND
I/O
External ROM data input/output terminal
O
FL bright control terminal
O
Communication request to system microprocessor (H : Request)
I
Request from system microprocessor (H : Request)
I
Panel microprocessor control (H : While operation)
O
Display control SW for FL driver (H : Display ON, L : Display OFF)
-
AVR 2.5V
-
GND
O
Key scan output terminal
-
NC
O
Key scan output terminal
I
NC
I
Volume input terminal
I
Volume input terminal
O
NC
-
AVR (3.3V)
-
GND
I
Key return input terminal
O
FL bright control terminal
-
NC
I
DATA input from system microprocessor
O
DATA output to system microprocessor
O
Clock output to FL driver
I
Key return input terminal (SRC, OPEN, EJECT interrupt port)
O
DATA output to FL driver
I
Clock input from FL driver
-
NC
O
DATA output to FL driver
I
Clock input from FL driver
-
NC
O
DATA output to FL driver
-
AVR (3.3V)
-
Main clock (5MHz)
x
ao
u163
y
-
GND
i
-
AVR 2.5V
-
GND
2 9
8
Description / Processing Operation
Q Q
3
6 7
1 3
1 5
co
.
KDC-9026R/PSW9527
KDC-W9027/X979
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
9

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