V24/cmos possible design, Figure 8, Figure 9 – Sierra Wireless AIRPRIME WISMO218 User Manual
Page 40: Figure 9 example of v24/cmos serial link, Implementation for 4-wire uart, Figure 8 example of v24/cmos serial link, Implementation for 2-wire uart, Customer application ( dte ) wismo218 ( dce )
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WA_DEV_W218_PTS_002
Rev 006
April 29, 2010
40
Product Technical Specification &
Customer Design Guidelines
Interfaces
3.6.3.1.
V24/CMOS Possible Design
Customer application
( DTE )
WISMO218
( DCE )
ON/~OFF
CT103/TXD
CT104/RXD
~CT105/RTS
~CT106/CTS
37
39
40
38
GND
Rx
RTS
CTS
GND
Tx
41
42
~CT107/DSR
44
~CT108/DTR
~CT109/DCD
~CT125/RI
45
43
DCD
RI
DSR
DTR
Figure 8. Example of V24/CMOS Serial Link Implementation for 2-wire UART
Customer application
( DTE )
WISMO218
( DCE )
ON/~OFF
CT103/TXD
CT104/RXD
~CT105/RTS
~CT106/CTS
37
39
40
38
GND
Rx
RTS
CTS
GND
Tx
41
42
~CT107/DSR
44
~CT108/DTR
~CT109/DCD
~CT125/RI
45
43
DCD
RI
DSR
DTR
Figure 9. Example of V24/CMOS Serial Link Implementation for 4-wire UART
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