Read Panasonic KX-TEA308UA / KX-TE82460X / KX-TE82492X / KX-TE82493X / KX-A227X Service Manual online
25.3. BLOCK DIAGRAM
NRESET
LD[7 : 0]
CID [3:1]
FSK
Receive
8E43)
Zerlink
(1ch)
LA[4 : 0]
NCS
NWR
NRD
TOE[3:0]
A54SX08A
(CAT)
FSK
Receive
T88E43)
Zerlink
(1ch)
C
O
N
N
N
N
E
C
C
T
O
R
NCD[2:0]
Call ID
(MT88E43B)
4.096
MHz
STD[3:0]
Q[3:0]
STD[2:0]
NDR[2:0]
DATA[2:0]
DCLK[2:0]
FSK[2:0]
20.0
MHz
KX-TE82493X CALL ID BLOCK DIAGRAM
DTMF
Receiver
(LC73854)
CID [3:1]
X3
X2
IC8
25.4. CIRCUIT OPERATIONS
25.4.1. Option Card (KX-TE82493X)
25.4.1.1. Call ID Detect Circuit
Circuit Operation
This card has three CALL ID detect circuits for support of three COL parts. If necessary to detect CALL ID on eight COLS then
three KX-TE82493 cards are required to be installed in the system. If only required to detect CALL ID on three COLS, then only
one KX-TE82493 card is required.
Incoming signal from COL is detected by CALL ID IC. The CALL ID data changed to serial data from parallel data (8 bit data)
by FPGA. After, the 16 bit CPU detect this 8 bit data and sending the CALL ID data for PITS.
three KX-TE82493 cards are required to be installed in the system. If only required to detect CALL ID on three COLS, then only
one KX-TE82493 card is required.
Incoming signal from COL is detected by CALL ID IC. The CALL ID data changed to serial data from parallel data (8 bit data)
by FPGA. After, the 16 bit CPU detect this 8 bit data and sending the CALL ID data for PITS.
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KX-TEA308UA
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