TEDIA PCI-1482E, User Manual

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RS-232 signals D-Sub 9
DCD 1
RXD 2
TXD 3
DTR 4
GND (common ground) 5
DSR 6
RTS 7
CTS 8
RI 9
Table 3. RS-232 Connector Pinout.
RS-422 signals RS-485 signals
D-Sub 9
GND (common ground) 1
RXD+ termination impedance 2
RXD- termination impedance 3
TXD+, or TXD/RXD+ termination impedance 4
TXD-, or TXD/RXD- termination impedance 5
RXD+ (B) - - - 6
RXD- (A) - - - 7
TXD+ (B) TXD/RXD+ (B) 8
TXD- (A) TXD/RXD- (A) 9
Table 4. RS-422/485 Connector Pinout.
Note: The circuit schematics including the termination resistors topology is shown in
Figure 4.
The user may activate the termination impedances by connecting the
corresponding pins at the D-Sub 9 connector (identical to all TEDIA PCI and ISA
communication cards) or by setting the appropriate jumper; see Figure 5.
PCI Express Communication Cards User guide - Appendix II, Tables and Figures
rev. 10.2009 II - 4