Read Panasonic KX-NS500 / KX-NS520 / KX-NS500RU / KX-NS520RU (serv.man2) Service Manual Supplement online
8
Change
Change
Changed from Original Service Manual as section 4.3.2.
1.1.4.
Expansion Unit Mother Board
Fig.5 shows detail block diagram of Mother Board, and each function of Base is described in Table.7.
Table.7 Expansion Unit Mother Board Function Description
Device/Function Block
Description
ASIC
ASIC controls and monitors SLIC/CODEC LSI of each analog line port.
SLIC/CODEC
SLIC/CODEC is exclusive LSI which is used for analog line interface.
8) Line interface power supply
9) Dial pulse detection
10) DTMF receiver / Caller ID generation
11) Bell signal generation
12) Hooking detection / Ringtrip detection
13) 2W/4W conversion
14) CODEC function
8) Line interface power supply
9) Dial pulse detection
10) DTMF receiver / Caller ID generation
11) Bell signal generation
12) Hooking detection / Ringtrip detection
13) 2W/4W conversion
14) CODEC function
Trunk option
Connector
Extension option
Connector
8
0
P
IN
C
C
O
N
NE
C
T
O
R
(C
(C
PU
In
te
rf
a
c
e
)
RJ45
POWER I/F
Connector
Exp
ansi
on
bu
s
SLIC/CODEC bus (SPI)
TDM Highway bus
AFE
SLIC/CODEC(2ch)
AFE
AFE
AFE
AFE
AFE
AFE
AFE
SLIC/CODEC(2ch)
SLIC/CODEC(2ch)
SLIC/CODEC(2ch)
SLIC/CODEC(2ch)
SLIC/CODEC(2ch)
SLIC/CODEC(2ch)
SLIC/CODEC(2ch)
ACALM, DCALM
+40V, GND
+15V, GND
RJ45
RJ45
RJ45
ASIC2
Line Controller
Line Controller
FAN I/F
Connector
+15V, GND
INT(2)
DC/DC
+3.3 V, GND
15
12V
INT_SLIC
INT_EXT
INT_CO
FAN_ALM
RJ45
PFT
RJ45
PFT
PFT1-PFT2
PFT2-PFT3
SLT4
SLT3
SLT3
Re
la
la
y
To SLT3-SLT4
PFT Relay
PFT Relay
RJ45
SLT2
SLT1
SLT1
Fig.5 Expansion Unit Mother Board Block Diagram
Change
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