KX-NS0180X - Panasonic PBX Service Manual (repair manual). Page 54

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54
KX-NS0180X
12.1.2. IC204 (Caller ID ASIC)
Pin No.
Terminal Name
I/O
Description
1
AVSS
-
GND (For analog interface)
2
AVDD
-
Power Supply (3.3V: For analog interface)
3
AINP3
in
Amplifier input
4
AINM3
in
Amplifier input
5
GS3
out
Amplifier output
6
AIN3
in
ADC input
7
AINP2
in
Amplifier input
8
AINM2
in
Amplifier input
9
GS2
out
Amplifier output
10
AIN2
in
ADC input
11
AVSS
-
GND (For analog interface)
12
AVDD
-
Power Supply (3.3V: For analog interface)
13
AINP1
in
Amplifier input
14
AINM1
in
Amplifier input
15
GS1
out
Amplifier output
16
AIN1
in
ADC input
17
AINP0
in
Amplifier input
18
AINM0
in
Amplifier input
19
GS0
out
Amplifier output
20
AIN0
in
ADC input
21
VREF
out
Voltage Reference
22
AVSS
-
GND (For analog interface)
23
AVDD
-
Power Supply (3.3V: For analog interface)
24
MODE3
in
Mode select bit (5V tolerant)
25
MODE2
in
Mode select bit (5V tolerant)
26
MODE1
in
Mode select bit (5V tolerant)
27
MODE0
in
Mode select bit (5V tolerant)
28
VSS
-
GND (For internal ASIC)
29
VDD
-
Power Supply (2.5V: For internal Power of ASIC)
30
NIRQ
out
Interrupt output
31
NWAIT
out
Wait signal (Open Drain)
32
NWR
in
Write enable signal (Low Active) (5V tolerant)
33
NRD
in
Read enable signal (Low Active) (5V tolerant)
34
DATA7
I/o
Data bus (5V tolerant)
35
DATA6
I/o
Data bus (5V tolerant)
36
DATA5
I/o
Data bus (5V tolerant)
37
DATA4
I/o
Data bus (5V tolerant)
38
DATA3
I/o
Data bus (5V tolerant)
39
DATA2
I/o
Data bus (5V tolerant)
40
VSSQ
-
GND (For ASIC I/O)
41
VDDQ
-
Power Supply (3.3V: For ASIC I/O)
42
DATA1
I/o
Data bus (5V tolerant)
43
DATA0
I/o
Data bus (5V tolerant)
44
NCS1
in
Chip select signal (Low Active) (internal pull up)
45
NCS0
in
Chip select signal (Low Active) (internal pull up)
46
DEC_NOCS1
out
DECODE result (Low Active)
47
DEC_NOCS0
out
DECODE result (Low Active)
48
DEC_NCSI
in
Chip select signal (Low Active) of Address decoder (equivalent to 139)
(internal pull up)
49
DEC_AD/ADD5
in
Address (Low Active) of Address decoder (equivalent to 139) (internal pull up)
It becomes the input terminal of ADD 5 at the extension mode.
50
ADD4
in
Address bus (5V tolerant)
51
ADD3
in
Address bus (5V tolerant)
52
ADD2
in
Address bus (5V tolerant)
53
VSS
-
GND (For internal ASIC)
54
VDD
-
Power Supply (2.5V: For internal Power of ASIC)
55
ADD1
in
Address bus (5V tolerant)
56
ADD0
in
Address bus (5V tolerant)
57
CLK_EN
in
System clock select terminal for ASIC shipment inspection
(Normal 
"
H
"
 input) (5V tolerant)
58
NRST
in
System reset (Low Active) (Schmidt trigger input) (5V tolerant)
59
VDDQ
-
Power Supply for ASIC I/O (3.3V)
60
VSSQ
-
GND for ASIC I/O
61
PLL_VCNT
in
Bias voltage for internal PLL
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