Connectors; Serial Ports - RadiSys EPC-23 Hardware Reference Manual

4. Connectors

This chapter specifies the details of the connectors on the EPC-23. These connectors
adhere to existing standards. Pins are labeled from the point of view of looking into
the front of the connector on the EPC.

Serial Ports

The COM1 serial port is a DB-9 DTE connector defined in the following table:
Pin Signal Pin Signal
1 DCD 6 DSR
2 RxD 7 RTS
3 TxD 8 CTS
4 DTR 9 Ring indicator
5 Ground
Table 6. DB-9 Pin-out.
The COM2 serial port is a DTE RJ45 phone jack defined in the following table:
RJ45 Signal DB25
1 Shield 1
2 CTS 4
3 TxD 3
4 DTR 8
5 RxD 2
6 DCD 20
7 Ground 7
8 RTS 5
Table 7. RJ45 Phone Jack Pin-out.
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