Serial Ports: Rj45; Dds Ports: Rj45; Rj45 Serial Pin Configuration; Rj45 Dds Pin Configuration - RuggedCom RuggedBackbone RX1512 Hardware Installation Manual

3. Installation

3.8. Serial Ports: RJ45

The RX1512 supports serial port line modules with RJ45 connections. On power-up, all serial
ports default to RS485 mode. Each port can be individually set to RS232, RS485, or RS422 mode
via software.
Figure 3.15. RJ45 Serial Pin Configuration
Pin 2 is reserved for future IRIG-B output. Do not connect Pin 2 at this time; doing
so may cause hardware damage. Pins 7 and 8 are connected internally. No internal
termination is provided. In RS232 mode, these pins enter a high impedance state.
A DTE that asserts RTS will see CTS asserted, but hardware flow control is not
performed on the port.

3.9. DDS Ports: RJ45

The RX1512 supports DDS port line modules with RJ45 connections. The 56 kbps DDS port is
compatible with Bellcore standards. Each DDS module features a single 56/64 kbps DDS line
interface with a standard RJ45 receptacle.
Figure 3.16. RJ45 DDS Pin Configuration
RuggedCom® RuggedBackbone™
Pin RS232 Mode
1
2
3
4
5 RX
6 TX
7 CTS
8 RTS
Shield
Table 3.5. RJ45
Assignment
RJ45 Pin
1 R1: Transmit data to network (Ring 1)
2 T1: Transmit data to network (Tip 1)
3
4
5
6
7 T: Receive data from network (Tip)
8 R: Receive data from network (Ring)
Table 3.6. RJ45 DDS Pin Assignment
25 RX1512 Installation Guide Rev 105
RS485 Mode RS422 Mode
RX-
Reserved
COM (Isolated GND)
COM (Isolated GND)
RX+
TX/RX + TX +
TX/RX - TX -
Chassis GND
RS232/RS485/RS422 Serial
Description
NC
NC
NC
NC
Pin