
Serial Ports
S
ERIAL
P
ORT
C
ONNECTORS
See the Connector Location Diagram on pages 11 and 12 for connector and cable information.
The pinout of the DB9 connector applies to use of the VersaLogic transition cable #VL-CBL-
8001.
This connector is protected with IEC 61000-4-2 (Level 4) rated TVS components to help protect
against ESD damage.
Table 8: Connectors JF / JG — Serial Port Pinout
COM1
JS4
Pin
COM2
JS4
Pin
RS-232
RS-422
RS-485
JF/JG
DB9
Pin
21B
31B
DCD
— —
1
22B
32B
DSR
— —
6
23B
33B
RXD* TxD+ TxD+ 2
24B
34B
RTS TxD– TxD– 7
25B
35B
TXD*
— —
3
26B 36B
CTS
Ground Ground 8
27B 37B
DTR
RxD– TxD/RxD–
4
28B 38B
RI
RxD+ TxD/RxD+
9
29B 39B
Ground Ground Ground 5
30B
40B
N/C
— —
—
26 – Reference
EPM-CPU-10 Reference Manual