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9.4. IC9 (CODEC)
Line wire
port
Pin No.
Pin Name
Signal Name
I/O
ACT
Description
CO9
40
SO1_1
SHNT8
O
L
Pulse Control/Bell Receive Control
41
SO1_0
DIAG8
O
H
Self-Diagnosis Switching
37
SB1_2
DIAL8
O
L
Line Acquisition
38
SB1_1
BELLI8
I
L
Receiving Bell Signal
39
SB1_0
REVDET8
I
H/L Line Reversal Detection
35
SI1_1
CPCDET8
I
H
Disconnect Detection
36
SI1_0
DT_STD8
I
H
DTMF Detection
CO10
43
SO2_1
SHNT9
O
L
Pulse Control/Bell Receive Control
42
SO2_0
DIAG9
O
H
Self-Diagnosis Switching
46
SB2_2
DIAL9
O
L
Line Acquisition
45
SB2_1
BELLI9
I
L
Receiving Bell Signal
44
SB2_0
REVDET9
I
H/L Line Reversal Detection
48
SI2_1
CPCDET9
I
H
Disconnect Detection
47
SI2_0
DT_STD9
I
H
DTMF Detection
CO11
6
SO3_1
SHNT10
O
L
Pulse Control/Bell Receive Control
7
SO3_0
DIAG10
O
H
Self-Diagnosis Switching
3
SB3_2
DIAL10
O
L
Line Acquisition
4
SB3_1
BELLI10
I
L
Receiving Bell Signal
5
SB3_0
REVDET10
I
H/L Line Reversal Detection
1
SI3_1
CPCDET10
I
H
Disconnect Detection
2
SI3_0
DT_STD10
I
H
DTMF Detection
CO12
9
SO4_1
SHNT11
O
L
Pulse Control/Bell Receive Control
8
SO4_0
DIAG11
O
H
Self-Diagnosis Switching
12
SB4_2
DIAL11
O
L
Line Acquisition
11
SB4_1
BELLI11
I
L
Receiving Bell Signal
10
SB4_0
REVDET11
I
H/L Line Reversal Detection
14
SI4_1
CPCDET11
I
H
Disconnect Detection
13
SI4_0
DT_STD11
I
H
DTMF Detection
34
KX-TDA6181X
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