Panasonic KX-TDA6382X / KX-TDA6382SX Service Manual ▷ View online
13
KX-TDA6382X/KX-TDA6382SX
4.2.2.5.
End-Call Signal Detection
This is detected by the photo coupler (pin 4 of PC4) at part of making DC loop. PC4 4-pin is High level during a call. However, at
end-call, PC4 4-pin converts from High to Low.
It detects an end-call with measuring of the signal width of Low level by CODEC (e.g. pin 35 of IC6, CPCDET).
The available setting values for detection width are none, 0.5msec~8msec(at 2msec intervals) and 16~896msec(at 8msec inter-
vals).
end-call, PC4 4-pin converts from High to Low.
It detects an end-call with measuring of the signal width of Low level by CODEC (e.g. pin 35 of IC6, CPCDET).
The available setting values for detection width are none, 0.5msec~8msec(at 2msec intervals) and 16~896msec(at 8msec inter-
vals).
4.2.2.6.
Polarity Reversal Detection
Configured by the photo couplers (PC1, PC2) that enable to detect each current in Tip
Ring, RingTip direction. (PC2 is used
in common as the bell detection photo coupler). Using Software, it stores the current direction (the detected photo coupler) at
acquiring line and recognizes the action by changing of the current direction (the detected photo coupler changes).
acquiring line and recognizes the action by changing of the current direction (the detected photo coupler changes).
When the current flows in the direction of Ring to Tip, 4-pin of PC1 is Low and 4-pin of PC2 is High.
• Ring
L1R2PC1(1-2)D3RL3Q4(C-E)D4D3L1TH1Tip
When the current direction (polarity) is reversed from Tip to Ring, 4-pin of PC1 turns to High and 4-pin of PC2 turns to Low.
It recognizes the action by changing of the current direction (the detected photo coupler changes).
It recognizes the action by changing of the current direction (the detected photo coupler changes).
• Tip
TH1L1D3D4Q4 (C-E)RL3D3PC1 (1-2)R2L1Ring
AG
+5V
DG
+5V
+5V
R20A
PC5A
1
2
3
4
R17A
T1A
2
1
3
4
C8A
D4A
2V
R11A
R14A
R15A
R16A
R18A
R19A
PC4A
1
2
3
4
C6A
C7A
Q5A
E
C
B
ZNR2A
RL3A
4
3
2
1
D5A
Q4A
E
C
B
CODEC
IC6
R[0]
T[0]
AG
+5V
DG
DG
DG
DG
DG
+5V
+5V
+5V
+5V
+5V
SFG
R
20A
PC5A
1
2
3
4
R
17A
D2A
R3
A
T1A
2
1
3
4
C1
A
C2
A
C4
A
C8A
D1A
D4
A
R21A
R
11A
R
14A
R15A
R16A
R1
8
A
R
19A
R1
A
R22A
R2
A
R4A
1.2K
R5
A
R6
A
J1A
RL
2
A
4
3
2
1
J4A
PC1A
1
23
4
PC2A
1
2
3
4
PC
4
A
1
2
3
4
L1A
1
2
3
4
C3
A
CN3 2
CN3 3
J7
A
C6
A
C7A
Q5A
E
C
B
ZN
R
2
A
CN2
1
26
D3A
1
2
3
4
TH1A
ZN
R
1
A
RL3A
4
3
2
1
D5
A
SA
1
A
12
3
Q4A
E
C
B
A
Ring
Tip
14
KX-TDA6382X/KX-TDA6382SX
4.2.2.7.
2W-4W Conversion
This converts 4W-voice signal inside PBX and 2W-voice signal on trunk line. It is configured by Op-Amp and BN (Balance Net-
work) in CODEC. It determines the return loss of voice and the frequency characteristic, and it can match with all sorts of imped-
ance by changing the parameters of CODEC.
work) in CODEC. It determines the return loss of voice and the frequency characteristic, and it can match with all sorts of imped-
ance by changing the parameters of CODEC.
4.2.2.8.
CODEC Interface
A dedicated interface, which can connect up to 4 PEB2466, for enabling circuit controls.
VIN[0]
DIAL[0]
VOUT[0]
CPCDET[0]
SHNT[0]
VH1
+15V
DG
+5V
AG
+5V
AG
R20A
PC5A
1
2
4
R32A
T1A
2
1
3
4
C10A
C11A
C12A
C16A
C8A
C9A
IC1A
1
2
3
4
8
R21A
R22A
R24A
R27A
R30A
R34A
R35A
DA1A
1
2
3
C7A
IC1A
5
6
7
R23A
CODEC
B/N in
CODEC
CODEC
Serial
Communications
Communications
Serial
Communications
Communications
S/P
conversion
conversion
Command Register
Transmit Register (FIFO)
Receive Register
MPR
DCLK
CS#1
4ch CODEC-1
Din
Dout
Dout
DCLK
CS
4ch CODEC-4
Din
Dout
Dout
DCLK
CS
CS#2
CS#3
CS#4
CS#3
CS#4
Timing
Control Circuit
Control Circuit
P/S
conversion
conversion
Transmit Start bit
CODEC Selected Register
Mode Selected Register
(byte/burst)
(byte/burst)
Status Register
Status Register
ASIC
15
KX-TDA6382X/KX-TDA6382SX
4.2.2.9.
CODEC Function
• CODEC Control...IC6, IC7
This uses PEB2466. CODEC interface DCLK, CS, DOUT and DIN configure the analog characteristic such as BN, frequency
characteristic, level, lateral consonant. Also, the built-in I/O port is used as HOOK detection, DTMF detection, BELL relay con-
trol.
characteristic, level, lateral consonant. Also, the built-in I/O port is used as HOOK detection, DTMF detection, BELL relay con-
trol.
• A/D, D/A Conversion
This converts 4 wire analog signal and G.711 format PCM (
/A).
4.2.2.10. Surge Protection
A gas arrester (SA1) is mounted between T and SFG, R and SFG.
And a discharge tube (SA3) is mounted between SFG and FG. Furthermore, Zenner Diode (D5) with the discharge voltage 25V
is mounted on the PBX side of the photo MOS relay for adding line.
And a discharge tube (SA3) is mounted between SFG and FG. Furthermore, Zenner Diode (D5) with the discharge voltage 25V
is mounted on the PBX side of the photo MOS relay for adding line.
REVDET[3]
CPCDET[3]
BELLI[3]
REVDET[3]
DIAL[3]
SHNT[3]
DIAL[2]
CPCDET[2]
VIN[3]
SHNT[2]
VOUT[3]
BELLI[3]
DT_STD[3]
CLK
C_CS[0]
DCLK
FH
nRST
DHW
DOUT
UHW
DIN
R2
1
15
INT34
34
INT12
20
DOUT
19
DIN
23
RESET
22
MCLK
17
CS
18
DCLK
9
SO4_1
8 S04_0
10 SB4_0
11 SB4_1
14 SI4_1
13 SI4_0
12 SB4_2
13 SI4_0
12 SB4_2
33
CHCLK1
16
CHCLK2
62 Vout4
64 Vin4
64 Vin4
R2
0
DG
C9
2
I/O port with
a built-in CODEC
a built-in CODEC
ASIC interface
T[0]
DG
DG
+5V
+5V
SFG
R
17A
D2A
R3
A
C1
A
D1A
D4
A
R
11A
R
14A
R15A
R5
A
J1A
RL
2
A
4
3
2
1
J4A
PC
4
A
1
2
3
4
L1A
1
2
3
4
C3
A
CN3 3
J7
A
Q5A
E
C
B
ZN
R
2
A
CN2
1
26
D3A
1
2
3
4
TH1A
ZN
R
1
A
RL3A
4
3
2
1
D5
A
SA
1
A
12
3
Q4A
E
C
B
F G
SFG
ZNR1
F G
SA3
16
KX-TDA6382X/KX-TDA6382SX
4.2.2.11. Power Failure Port
At the time of the power failure, for enabling a direct call to the extension phone, 4 lines out of 16 lines can be connected to the
SLT port, which provides a switching relay for power failure on the extension card, by a cable. Connecting CN3, CN4 with the
connectors for power failure on the extension card can call at the power failure.
SLT port, which provides a switching relay for power failure on the extension card, by a cable. Connecting CN3, CN4 with the
connectors for power failure on the extension card can call at the power failure.
4.2.2.12. Noise Rejection
It rejects the extrinsic noise that comes from the outside line with the coils L1A~H that are mounted on the Main Board between
T- R and the capacitors C1A~H that are mounted between T-R.
T- R and the capacitors C1A~H that are mounted between T-R.
It rejects the extrinsic noise that comes from the outside line with the filters L1I - P, L2I - P,L3I - P,L4I - P that are mounted on the
Sub Board between T - R and the capacitors C13I - P that are mounted between T - R.
Sub Board between T - R and the capacitors C13I - P that are mounted between T - R.
R[0]
T[0]
AG
+5V
DG
DG
DG
DG
DG
+5V
+5V
+5V
+5V
+5V
SFG
R
20A
PC5A
1
2
3
4
R
17A
D2A
R3
A
T1A
2
1
3
4
C1
A
C2
A
C4
A
C8A
D1A
D4
A
2V
R21A
R
11A
R
14A
R15A
R16A
R
18A
R
19A
R1
A
R22A
R2
A
R4A
R5
A
R6
A
J1A
RL
2
A
4
3
2
1
J4A
PC1A
1
23
4
PC2A
1
2
3
4
PC
4
A
1
2
3
4
L1A
1
2
3
4
C3
A
CN3 2
CN3 3
J7
A
C6
A
C7A
Q5A
E
C
B
ZN
R
2
A
CN2
1
26
D3A
1
2
3
4
TH1A
ZN
R
1
A
RL3A
4
3
2
1
D5
A
SA
1
A
12
3
Q4A
E
C
B
A
R[0]
T[0]
AG
+5V
DG
DG
DG
DG
DG
+5V
+5V
+5V
+5V
+5V
SFG
R
20A
PC5A
1
2
3
4
R
17A
D2A
R3
A
T1A
2
1
3
4
C1
A
C2
A
C4
A
C8A
D1A
D4
A
2V
R21A
R
11A
R
14A
R15A
R16A
R
18A
R
19A
R1
A
R22A
R2
A
R4A
R5
A
R6
A
J1A
RL
2
A
4
3
2
1
J4A
PC1A
1
23
4
PC2A
1
2
3
4
PC
4
A
1
2
3
4
L1A
1
2
3
4
C3
A
CN3 2
CN3 3
J7
A
C6
A
C7A
Q5A
E
C
B
ZN
R
2
A
CN2
1
26
D3A
1
2
3
4
TH1A
ZN
R
1
A
RL3A
4
3
2
1
D5
A
SA
1
A
12
3
Q4A
E
C
B
A
R[8]
T[8]
DG
DG
+5V
SFG
T[8]
R[8]
DG
+5V
DG
+5V
DG
AG
+5V
+5V
+5V
RING[8]
TIP[8]
PC5I
1
2
3
4
J1I
R3I
C1
I
NC
C2
I
C4I
D2I
R
11I
R
14I
R
15I
R16I
R
17I
R
18I
R
19I
R1
I
D1I
D4
I
2V
R
20I
R22I
R2
I
R4I
R5
I
R6I
J7
I
RL2I
4
3
2
1
ZN
R
1
I
C8I
R21I
L1I
L2I
J4I
PC1I
1
23
4
PC2I
1
2
3
4
PC
4
I
1
2
3
4
C3
I
C7
I
RL3I
4
3
2
1
T1I
2
1
3
4
C6
I
TH1I
ZN
R
2
I
Q5I
E
C
B
D3I
1
2
3
4
D5
I
SA
1
I
12
3
Q4I
E
C
B
L4I
L3I
C
13I
I
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