Panasonic KX-NCP1174XJ (serv.man2) Service Manual ▷ View online
6
KX-NCP1174XJ
5 Technical Descriptions
5.1.
Block Diagram
KX-NCP1
174XJ BLOCK DIAGRAM
DC
Fe
e
d
in
g(
+
3
0
V
)
Se
rg
e
EM
C
DC
Fe
e
d
in
g(
G
N
D)
H
ook
-
D
e
t
&
Ri
n
g
tr
ip
-D
e
t
Be
ll
R
e
lay D
ri
v
e
r
Tip
Ri
n
g
CH
_S
EL
FH
#H
OO
K0
BE
LL
0
+40
V
20H
z/
25
Hz
S
ig
n
a
l
IC14
Port#
1
nR
ES
ET
P2
6
P0
[7
:0
]
P4
[7
:0
]
TO
E[
15
:0
]
LD
[7
:0
]
F
H
,H
W
CLK
,D
HW,
UH
W
IC
1
DT
MF
RE
C
#T
OE
0
PF
RL
Y
HW
CL
K
DH
W
UH
W
IC
201
PEB
24
66
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
S
a
m
e
a
s
"
P
o
rt#2".
S
a
m
e a
s
"
P
o
rt#2".
P
o
rt#3
Por
t#
4
S
a
m
e
a
s
"
P
o
rt#2".
IC
202
PEB
24
66
IC
250
PEB
24
66
IC
251
PEB
24
66
DI
N
DO
UT
C_
CS
[3
:0
]
DC
LK
nR
ST
On
-
Boa
rd
Rin
ger
Be
ll R
e
la
y
DC
Fe
ed
in
g
(+3
0V
)
Se
rg
e
EM
C
DC
Fe
e
d
in
g(
G
N
D)
H
ook
-
D
e
t
&
Ri
n
g
tr
ip
-D
e
t
Be
ll
R
e
lay D
ri
v
e
r
Tip
Ri
n
g
Port#
2
IC
1
DT
MF
RE
C
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
Be
ll R
e
la
y
BE
LL
1
#H
OO
K1
S
a
m
e
a
s
"
P
o
rt#2".
S
a
m
e
a
s
"
P
o
rt#2".
+15
V
nR
ES
ET
nR
ES
ET
ST
D0
L
D[3:0]
ST
D1
#T
OE
1
DI
N
DO
UT
CS
[0
]
DC
LK
D
O
U
T
,DIN
,D
CLK
,C
S[
1]
D
O
U
T
,DIN
,D
CLK
,C
S[
2]
D
O
U
T
,DIN
,D
CLK
,C
S[
3]
Back Board
EC
_C
LK
nS
YS
TE_R
ST
EC
EC
_B
E[
1:
0
]
EC
_P
AR
EC
_F
RA
ME
EC
_T
RD
Y
EC
_S
TO
P
EC
_I
DS
EL
EC
_P
ER
R
EC
_I
NT
CT
_C
8_
A
CT
_D
[7
:0
]
UH
W
A
[5:
0]
D
[7:0
]
n
RD,
nWR
n
CS_
CID
+
2.5
V
n
RST
CP
0
H
WCL
K
+
2.5
V
+3
.3
V
+
15V
+
40V
+5
V
DC
/D
C
DC
/D
C
+2
.5
V
DC
/D
C
XT
AL
4.096MH
z
MO
D
E
4
J
U
M
PER
8
ASIC
(e
SA
M
S
O
N
)
M
O
D
E
[5
:0
]
P
O
[7
:0
]
n
R
ESET
P
LLC
LK
J
U
M
PER
R
ESET
IC
XT
A
L
16.
38
4
MH
z
J
U
M
PER
Be
ll SY
N
C
P
O
[7
:0
]
M
O
D
E
[3
:0
]
H
WCL
K[1
]
C
P[0
]
CP
1
L
A[1
2:0
]
L
D[7
:0]
n
RD,
nWR
n
RST
Se
rg
e
EM
C
H
o
o
k-Det &
Ringtrip-Det
Be
ll
R
e
lay D
ri
v
e
r
CH
_S
EL
FH
IC14
R
ing
er
(75V
rm
s
)
Port#
1
P2
6
P0
[7
:0
]
P4
[7
:0
]
IC
1
DT
MF
RE
C
HW
CL
K
DH
W
UH
W
IC
201
COD
EC
PEB
24
66
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
S
a
m
e
a
s
"
P
o
rt#2".
S
a
m
e a
s
"
P
o
rt#2".
P
o
rt#3
Por
t#
4
S
a
m
e
a
s
"
P
o
rt#2".
P
o
rt#5
- #8
IC
202
COD
EC
PEB
24
66
P
o
rt#9 -
#12
IC
250
COD
EC
PEB
24
66
IC
251
COD
EC
PEB
24
66
DI
N
DO
UT
C_
CS
[3
:0
]
DC
LK
O
n
-Boa
rd
Rin
ger
Se
rg
e
EM
C
Be
ll
R
e
lay D
ri
v
e
r
Port#
2
IC
1
DT
MF
RE
C
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
Be
ll R
e
la
y
S
a
m
e
a
s
"
P
o
rt#2".
S
a
m
e
a
s
"
P
o
rt#2"
.
Back Board
EC
_C
LK
nS
YS
TE
_R
ST
EC
_A
D[
15
:0
]
EC
_B
E[
1:
0
]
EC
_P
AR
EC
_F
RA
ME
EC
_T
RD
Y
EC
_S
TO
P
EC
_I
DS
EL
EC
_P
ER
R
EC
_I
NT
CT
_C
8_
A
CT
_F
RA
M
E
_
A
CT
_N
ET
R
E
F
CT
_D
[7
:0
]
IC70
0
DC
/D
C
DC
/D
C
DC
/D
C
DC
/D
C
+V
DC
/D
C
DC
/D
C
4
8
ASIC
(e
SA
M
S
O
N
)
ASIC
(CID)
M
O
D
E
[5
:0
]
P
O
[7
:0
]
n
R
ESET
P
LLC
LK
P
O
[7
:0
]
M
O
D
E
[3
:0
]
H
WCL
K[1
]
C
P[0
]
CP
1
L
A[1
2:0
]
L
D[7
:0]
n
RD,
nWR
n
RST
DC Feeding (GND)
DC Feeding (+30V)
DC Feeding (GND)
DC Feeding (+30V)
H
o
o
k-Det &
Ringtrip-Det
L
D[3:0]
Port#13 - #16
7
KX-NCP1174XJ
5.2.
Circuit Operation
5.2.1.
Control-System Circuit
5.2.1.1.
IC14 (ASIC)
• EC bus interface
Independent bus for 16bit/8MHz two-way address data multiplex.
• CT bus interface
Supports eight 8.192MHz highways (128 time slots).
• Local TSW
Exchanges the time slots between CT bus (1024ch) and local highway (64ch).
• Local highway interface
Accommodates 2.048, 4.096, and 8.192MHz highways (Up to 64 time slots).
• Local gain control
Controls the gain of the local highway up-and-down 64ch in 1db step arbitrarily.
8
KX-NCP1174XJ
• CODEC interface
Can connect up to four Infineon-manufactured PEB2466, and is intended for enabling the line control.
• GPIO interface
Parallel interface that is arbitrarily programmable bidirectionally.
9
KX-NCP1174XJ
5.2.2.
CODEC Function (IC201, 202, 250, 251)
Infineon PEB2466 CODEC is installed. The analogue features such as BN, frequency characteristic, volume level, side tone are
configured by ASIC CODEC interface DCLK, CS, DOUT, DIN. In addition, the CODEC has an internal I/O port that supports Hook
detection, DTMF detection, BELL relay control and DIAG relay control. Also, it converts A/D to D/A, and 4-line-analogue signal to
PCM code in G.711 format.
configured by ASIC CODEC interface DCLK, CS, DOUT, DIN. In addition, the CODEC has an internal I/O port that supports Hook
detection, DTMF detection, BELL relay control and DIAG relay control. Also, it converts A/D to D/A, and 4-line-analogue signal to
PCM code in G.711 format.
5.2.3.
2W-4W Conversion
It converts 4W-VOX signal used in the PBX to 2W-VOX signal used in SLT, and vice versa. It consists of an operational amplifier in
the HIC and a balanced network in the CODEC. It can control the return loss of the audio data and frequency characteristics. By
modifying the CODEC program, it can match the corresponding impedance.
the HIC and a balanced network in the CODEC. It can control the return loss of the audio data and frequency characteristics. By
modifying the CODEC program, it can match the corresponding impedance.
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