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RJ45
TX+
TX-
RX+
RX-
Switch
Line
Extn
LOOPB
LoopBack
Test
Line Interface Block(T1)
Transformer
Serge
Termination
EMC
Transformer
Serge
EMC
Termination
20MHz
DPLL
nRESET
16.384MHz
(MT8941)
CVb
MODE7
nC4b
MS3-0
+5V
DSP i/f
DTMF Rcv 24ch
10MHz
+3.3V
+1.8V
DSTi
UHW0
IC302
DSTo
nHW_FH
nFOb
HW_CLK0
T1-IC
nC4b
D7-0
D[7:0]
A4-0
A[4:0]
nRD,nWR
nCS_ISDN
nINT_ISDN
+5V
nIRQ
LOS
BS/nLS
LOS
nRxMF
nRxMF
S/nFR/C.1.5i
nTxMF
nTxMF
ISDN _RST
nRES
E1.5o/C1.5o
+5V
CLKOUT(4.096MHz)
IC303
BDR0
UHW0
BDX0
DHW0
DSP
BDR1
nSHW_FH(8kHz)
BFSR(X)0/1
HW_CLK1(2M)
BCLKR(X)0/1
D7-0
A2-1
HCNT[1:0]
A0
HBIL
A3
HR/nW
nRD,nWR
nHDS1,nHDS2
HRDY
DVdd
HRDY
CVdd
nCS_DSP
nHCS
nINT_DSP
nHINT
DSP_nRST
DHW0(2.048Mbps)
UHW0(2.048Mbps)
nHW_FH(8KHz)
HW_CLK0(4.096MHz)
HW_CLK1(2.048MHz)
CLKOUT(4.096MHz)
nSHW_FH(8kHz)
+3.3V
Flash
8Mbit
(512k x 16)
IC5
RYnBY
nRESET
D7-0
3.3v
5v
Level
Shifter
A10
nCS_ISDN
nCS_DSP
Decoder
nINT_ISDN
nINT_DSP
LOS
nCS[0]_S
nRxMF
RYnBY
12.288MHz
Jumper
+3.3V
SRAM
4Mbit
Status
(256k x 16)
Indication x 4
IC3
ISDN _RST
DSP_nRST
nTxMF
LOOPB
HRDY
nCS_DMA
D7-0
A12-0
nRD,nWR
nCS1
nCS[0]_S
D15-0
nINT_ISDN
A19-0
+3.3V
nINT_DSP
LOS
nRD
IC1
nWR
MASK
nLBS
CPU
nRxMF
f=12.288MHz
nCS0
nCS1
nCS2
nCS3
nIRQ1
nCS6
+3.3v
(Gr)
LED
nIRQ2
(Red)
nIRQ3
ALM(Red)
nRST
nRES
nIRQ4
nBREQ
nIRQ5
nBACK
PB[3]
nWAIT
nIRQ0
RXD
PB[0]
TXD
RTS
PA[11 ]
CTS
PB[10]
RS232C
KX-TDA0187 BLOCK DIAGRAM
IC2
ASIC
+3.3v
LDHW[1:0]
LUHW[1:0]
HW_FH
HW_CLK0
HW_CLK1
L_NETREF
SHW_FH
EC_CLK
EC_AD[15:0]
EC_BE[1:0]
EC_bus
EC_FRAME
P0[7:0]
EC_TRDY
EC_STOP
28
EC_INT
EC_PAR
EC_PERR
EC_nRST
EC_IDSEL
EC_DET
P1[4:0]
P2[0]
P2[1]
P2[6]
P3[0]
P3[4]
nCS_DMA
H100 bus
CT_NETREF
LD[7:0]
nCT_FRAME_A
LA[12:0]
CT_CLK_A
nRD,nWR
11
CT_D[7:0]
nCSI
nCS[0]
CT_LOS
P2[7]
nIRQ[1]
Local
nRESET
Reset
P2[4]
P2[5]
nIRQ[0]
nRESET
OSC
16.384MHz
PLLCLK
P2[3]
P2[2]
nLRST
nBREQ
nBACK
nWAIT
nHALT
+1.8V
+15v
DC/DC
+3.3v
Converter
+5v
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