Read Panasonic KX-T7565RU Service Manual online
5.2. IC2
Classification
Terminal
Pin No.
Input/Output
Function
Power supply
Vcc
7
-
Power supply terminal
GND
3
-
Ground terminal
CVcc
64
-
Connect to the Vcc terminal
Vtref
61
-
DTMF reference level voltage terminal
Connect to the Vcc terminal
Connect to the Vcc terminal
Oscillation
X1
1
Input
Input/Output terminal to the main oscillator.
X2
2
Output
Connect to the ceramic oscillator.(8MHz)
OSC1
5
Input
No use
OSC2
4
Output
No use
Reset
RESET
8
Input
Reset terminal of MCU (Active Low)
Test
TEST
6
Input
No use
I/O port
P20
9
Output
DTMF tone control
P24
13
Output
Handset tone control
P25
14
Output
SP-Phone tone control
P26
15
Output
Ringer tone control
P27
16
Input
Hook Switch
SCK1
10
Output
LCD serial clock
P22
11
Output
LCD write enable command
SO1
12
Output
LCD data
P17
17
Input
Interrupt request from G/A (IC1)
P16
18
Input
Interrupt request from G/A (IC1)
P15
19
Output
Reset terminal of G/A (IC1) (Active Hi)
P14
20
Output
KEY communication output 1
P13
21
Output
KEY communication output 2
P12
22
Output
KEY communication output 3
P11
23
Output
KEY communication output 4
P10
24
Output
KEY communication output 5
P50
28
Input
KEY communication input 0
P51
29
Input
KEY communication input 1
P52
30
Input
KEY communication input 2
P53
31
Input
KEY communication input 3
P54
32
Input
KEY communication input 4
P55
33
Input
KEY communication input 5
P56
34
Input
KEY communication (HOLD key)
P57
35
Input
No use
PA3
25
Output
W.OHCA control
8
KX-T7565RU
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