MT8840 Datasheet, PDF (4/8 Pages) Mitel Networks Corporation – ISO2-CMOS Data Over Voice Modem

MT8840 ISO²-CMOS
Micro-
processor
UART
Tx Data
Tx
MT8840
Rx Data
Rx
Summing
Circuit
PCM
Highway
Tx
FILTER/
CODEC
(MT896X) _Rx
2W/4W
Converter
Telephone
line
Figure 3 - Digital PABX Block Diagram
Micro-
processor
Tx Data
Tx
UART
MT8840
Rx Data
Rx
To
Another
Telephone
Extension
SLIC
Analog
Switch
Array
(MT8804) ^Tx
(Optional)
Low-
Rx
Pass
Filter
Summing
Circuit
2W/4W
Converter
Telephone
line
Figure 4 - Analog PABX Block Diagram
5-6