MC145422 Datasheet, PDF (3/20 Pages) Motorola, Inc – UNIVERSAL DIGITAL-LOOP TRANSCEIVER(UDLT)

MC145422 MASTER UDLT BLOCK DIAGRAM
LO1
+1
MODULATION BUFFER
*
LO2
–1
CCI
MSI
LI
RECEIVE
REGISTER
*
SEQUENCE
*
AND
CONTROL
*
VD CONTROL
* — SE controlled latch
DEMODULATION BUFFER
*
TRANSMIT
REGISTER
MC145426 SLAVE UDLT BLOCK DIAGRAM
LO1
+1
MODULATION BUFFER
LO2
–1
LOOPBACK
CONTROL
RECEIVE
TONE
GEN.
REGISTER
LB
TE
POWER–
PD
DOWN
CONTROL
SEQUENCE
AND
CONTROL
X2
OSC
X1
VD CONTROL
LI
DEMODULATION BUFFER
*
TRANSMIT
REGISTER
SI1
SI2
SE
RE1
Rx
LB
PD
SIE
VD
SO1
SO2
Tx
TE1
TDC/RDC
SI1
SI2
Rx
RE1
Mu/A
CLK
VD
SO1
SO2
Tx
TE1
MOTOROLA
MC145422•MC145426
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