WA_DEV_W218_PTS_002 Rev 005 Page 41 of 109

Product Technical Specification &

Customer Design Guidelines

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/RI45
43 DCD
RI
DSR
DTR

Figure 8. Example of V24/CMOS Serial Link Implementation for 2-w ire 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/RI45
43 DCD
RI
DSR
DTR

Figure 9. Example of V24/CMOS Serial Link Implementation for 4-w ire UART