KX-TDA6381X, KX-TDA6381SX — Panasonic PBX Service Manual (repair manual). Page 7

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7
KX-TDA6381X/KX-TDA6381SX
4.1.2.
Block Diagram of Sub Board
nRES
A[4:0]
D[7:0]
ASIC
(CIDAك
nWR
nRD
nRES
C_CS[2]
DHW[0]
UHW[0]
CLK
FH
DOUT
DXA
DXB
PCLK
MCLK
DIN
DCLK
CS
DRA
DRB
CODEC
PEB
2466
FSC
RESET
NCS0
NWR
NRST
NRD
nCS[0]
nCPCDET[0]
SHUNT[0]
Rev&Bell
&Shunt
Detector
Port I
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[0]
nLOOP[0]
Serge
EMC
nREVDET][0]
OP AMP
Rev&Bell
&Shunt
Detector
Port J
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[ڭ]
nLOOP[ڭ]
Serge
EMC
nREVDET][ڭ]
OP AMP
Rev&Bell
&Shunt
Detector
Port K
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[ڮ]
nLOOP[ڮ]
Serge
EMC
nREVDET][ڮ]
OP AMP
Rev&Bell
&Shunt
Detector
Port L
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[䠏]
nLOOP[䠏]
Serge
EMC
nREVDET][䠏]
nCPCDET[ڭ]
SHUNT[ڭ]
nCPCDET[ڮ]
SHUNT[ڮ]
nCPCDET[䠏]
SHUNT[䠏]
+2.5V
+2.5V
DXA
DXB
PCLK
MCLK
DIN
DCLK
CS
DRA
DRB
CODEC
PEB
2466
FSC
RESET
nCPCDET[ڰ]
SHUNT[ڰ]
OP AMP
Rev&Bell
&Shunt
Detector
Port M
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[ڰ]
nLOOP[ڰ]
Serge
EMC
nREVDET][ڰ]
OP AMP
Rev&Bell
&Shunt
Detector
Port N
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[ڱ]
nLOOP[ڱ]
Serge
EMC
nREVDET][ڱ]
OP AMP
Rev&Bell
&Shunt
Detector
Port O
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[ڲ]
nLOOP[ڲ]
Serge
EMC
nREVDET][ڲ]
OP AMP
Rev&Bell
&Shunt
Detector
Port P
Transformer
DIAL &
DC Loop &
CPC
Detector
nBELDET[ڳ]
nLOOP[ڳ]
Serge
EMC
nREVDET][ڳ]
nCPCDET[ڱ]
SHUNT[ڱ]
nCPCDET[ڲ]
SHUNT[ڲ]
nCPCDET[ڳ]
SHUNT[ڳ]
A[4:0]
D[7:0]
ASIC
(CIDAك
NCS0
NWR
NRST
NRD
+2.5V
+2.5V
nRES
DIN
C_CS[0]
DHW[0]
UHW[0]
CLK
FH
nWR
nRD
nRES
T/R[8]
T/R[9]
T/R[10]
T/R[11]
T/R[12]
T/R[13]
T/R[14]
T/R[15]
+15V
+5V
+3.3V
+2.5V
Connector
fr
om
Main
boa
rd
(CO
L
ine)
Connect to
Control & Power line
connector
C_CS[3]
DOUT
OP AMP
T/R [11:8]
DEC_AD
A[5]
OSI
OSI
Not
Mounted
Not
Mounted
T/R [15:12]
Connector
fr
o
m
Main
Boa
rd(
Contr
o
l
&
power
L
in
e
)
4MCLK+15V
KX-TDA6381
Sub Board
Brock Diagram
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