MAS7838 ETC, MAS7838 Datasheet - Page 6

• Manufacturer Part Number: MAS7838
• Description: SYNCHRONOUS TO ASYNCHRONOUS CONVERTER SAC CMOS
• Manufacturer: ETC

u
Another application is a synchronous serial interface for uP which uses UART as a data source. The concept is
illustrated below.
u
A third application is a data multiplexing/demultiplexing
system. The system accepts data from several sources.
These data lines are sampled and the samples are sent
through a multiplexer to a demultiplexer. To accomplish
RS232C
CH 1
CH 2
CH N
uP INTERFACE
RDO
TDI
M AS7838
M AS7838
1
2
N
TDO
RDI
RDO
TDI
DEMUX
MUX/
MAS7838
FORWARD
BACKWARD
TIMING
TDO
RXC
TXC
RDI
DEMUX
MUX/
this, either a very high sample rate is needed or first
convert the data to synchronous mode, where
synchronous multiplexing can be used and only one
sample per data bit is needed.
RDI
TDO
MODEM CIRCUITS
Sync Modem
Data Pump
M AS7838
M AS7838
1
2
N
RDO
TDI
20 September, 2000
PHONE LINE
DA7838.002
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