Panasonic KX-P7100, Service Manual

Page: 88 / 148

7 Component Reference Guide
7.1. IC1 ( Main Control CPU )
IC1 (Main Control CPU)
Pin
No.
Symbol In/Out Function
Pin
No.
Symbol In/Out Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
NC1
P10
P11
P12
P13
P14
P15
P16
P17
RST
RXD
NC2
TXD
nINT0
nINT1
T0
T1
nWR
nRD
XTAL2
XTAL1
GND -
Out
Out
-
Out
In
-
-
-
In
Out
-
Out
In
In
-
In
Out
Out
-
In
-
N.C.
I/F selector signal
Power save signal
(not used)
LED (Ready) contorl signal
Purge signal
(not used)
(not used)
(not used)
System reset
LED (Error) contorl signal
N.C.
LED (PU) contorl signal
Intterrupt0
Intterrupt1
(not used)
Key detection signal
Write signal
Read signal
N.C.
System clock
GND 23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44 NC3
A8
A9
A10
A11
A12
A13
A14
A15
nPSEN
ALE
NC4
nEA
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
VCC -
Out
Out
Out
-
-
-
-
-
-
Out
-
-
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
-
N.C.
Address8
Address9
Address10
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
Address latch enable
N.C.
+5V
Address/Data7
Address/Data6
Address/Data5
Address/Data4
Address/Data3
Address/Data2
Address/Data1
Address/Data0
+5V
7.2. IC2 ( Inverters )
IC2 (Inverters)
Pin
No.
Symbol In/Out Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1A
1Y
2A
2Y
3A
3Y
GND
4Y
4A
5Y
5A
6Y
6A
VCC In
Out
In
Out
In
Out
-
Out
In
Out
In
Out
In
-
GND
+5V
A(In)
L
H
Y(Out)
H
L
A(In)
L
H
Y(Out)
H
L
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KX-P7100