Connect Tech Titan/cPCI - Manual (Page 31)

Titan/cPCI User’s Manual, Connect Tech Inc.
Revision 1.01 27
TxD
TxD +
RxD -
TxD -
RxD +
Titan/cPCI Rear I/O Opto
RS-422/485 Line Bias/Termination
RxD
RTS
RTS +
CTS -
RTS -
CTS +
CTS
PCI 954
UART
150 Ω
1.8K Ω
1.8K Ω
+5 V
150 Ω
1.8K Ω
1.8K Ω
+5 V
150 Ω JA4, JB4, JC4, JD4
150 Ω JA3, JB3, JC3, JD3
JA8, JB8, JC8, JD8
JA7, JB7, JC7, JD7
JA6, JB6, JC6, JD6
JA5, JB5, JC5, JD5
10K Ω
DTR JA3, JB3, JC3, JD3
Figure 8: RS-422/485 partial schematic for Rear I/O Opto
Note
Line bias/termination is jumper selectable