IC No.
Pin No.
Pin
name
Signal
name
I/O
ACT
Description
Remarks
IC251
40
SO1_1
O
-
EXT0
Not used
41
SO1_0
BELL0
O
H
Bell signal issue
37
SB1_2
I
H
Not used
38
SB1_1
DIAG0
O
H
Self-diagnosis switching
39
SB1_0
O
H
Not used
35
SI1_1
HOOK0
I
L
Off-hook detection
36
SI1_0
EST0
I
H
DTMF detection
43
SO2_1
O
-
EXT1
Not used
42
SO2_0
BELL1
O
H
Bell signal issue
46
SB2_2
I
H
Not used
45
SB2_1
O
H
Not used
44
SB2_0
O
H
Not used
48
SI2_1
HOOK1
I
L
Off-hook detection
47
SI2_0
EST1
I
H
DTMF detection
6
SO3_1
O
-
EXT2
Not used
7
SO3_0
BELL2
O
H
Bell signal issue
3
SB3_2
I
H
Not used
4
SB3_1
O
H
Not used
5
SB3_0
O
H
Not used
1
SI3_1
HOOK2
I
L
Off-hook detection
2
SI3_0
EST2
I
H
DTMF detection
9
SO4_1
O
-
EXT3
Not used
8
SO4_0
BELL3
O
H
Bell signal issue
12
SB4_2
I
H
Not used
11
SB4_1
O
H
Not used
10
SB4_0
O
H
Not used
14
SI4_1
HOOK3
I
L
Off-hook detection
13
SI4_0
EST3
I
H
DTMF detection
36
Содержание KX-TDA0170
Страница 13: ...6 TROUBLESHOOTING GUIDE 13 ...
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Страница 21: ...7 BLOCK DIAGRAM 21 ...
Страница 39: ...11 TERMINAL GUIDE OF ICS TRANSISTORS AND DIODES 12 CABINET AND ELECTRICAL PARTS LOCATION 39 ...
Страница 40: ...13 ACCESSORIES AND PACKING MATERIALS 40 ...
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Страница 52: ...ZNR52E D4EAB220A005 VARISTOR 52 ...