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PFT Relay Diag Relay
Tip
Serge
Ring
EMC
PFT
Jack# 4
PFT Relay
Tip
Serge
Ring
EMC
PFT
Jack#2
Port# 4
DC Feeding(+30V)
Bell Relay
Balance
Network
(BN)
DC Feeding(GND)
Hook-Det
&
Ringtrip-Det
BELL/DIAG
RELAY DRIVER
Port#2
DC Feeding(+30V)
Bell Relay
Balance
Network
(BN)
DC Feeding(GND)
Hook-Det
&
Ringtrip-Det
BELL/DIAG
RELAY DRIVER
Port#3
Same as "Port#2".
Port#4
Same as "Port#2".
Port#55 #8
Same as "Port#2".
(No PFT Interface)
Port#95 #42
Same as "Port#2".
(No PFT Interface)
Port#435 #46
Same as "Port#2".
(No PFT Interface)
+15V
PFT
Relay Driver
LD[7:0]
STD0
#TOE0
DTMF
IC201
LD [3:0]
REC
#HOOK0
BELL0
DIAG0
CODEC
STD1
PEB
2466
#TOE1
DTMF
REC
LD [3:0]
#HOOK1
BELL1
nRESET
DIAG1
DOUT,DIN,DCLK,CS[1]
IC202
CODEC
PEB
nRESET
2466
DOUT,DIN,DCLK,CS[2]
IC250
CODEC
PEB
nRESET
2466
DOUT,DIN,DCLK,CS[3]
IC251
CODEC
nRESET
PEB
2466
PFRLY
Ringer(75Vrms)
nRESET
DOUT
DIN
JUMPER
DCLK
CS[0]
RESET
IC
IC9
XTAL
16.384MHz
1
FH,HWCLK,DHW,UHW
PFRLY
TOE[15:0]
Power
+40V
Supply
+15V
On-Board
20Hz/25Hz Signal
Ringer
KX-TDA0174 BLOCK DIAGRAM
IC14
nIRQ
L_nRST
ASIC
nWR
nRD
PCI_CLK
PCI_RST#
nCSI
PCI_AD[31:0]
LA[11:0]
PCI_C/BE#[3:0]
PCI_PAR
PCI_FRAME#
LD[7:0]
PCI_IRDY#
PCI_TRDY#
PCI_STOP#
PCI_IDSEL
PCI_DEVSEL#
MODE[5:0]
PCI_REQ#
PCI_GNT#
PCI_PERR#
PCI_SERR#
PCI_INTA#
nRESET
PCI_INTB#
PCI_INTC#
PCI_INTD#
PLL
P1[7:0]
P3[7:0]
DOUT
DIN
DCLK
CS[3:0]
FH
HWCLK
H100
DHW
native
UHW
CH_SEL
CT_C8_A
CT_C8_B
/CT_FRAME_A
/CT_FRAME_B
CT_D[15:0]
CT_NETREF
P26
P0[7:0]
P4[7:0]
+5V
Power
+15V
Supply
+3.3V
Diag-Tip,Diag-Ring
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