Appendix C System Board Connector Pinouts 211
Twisted-Pair Ethernet Connector
TABLE C-5 lists connector pin assignments and signal descriptions for the twisted-pair
Ethernet connector.
FIGURE C-5 Twisted-pair Ethernet Connector
15 TRxC A I RS-232/423 Receive/transmit clock port A
(pullup)
16 Rec Data B I RS-232/423 Receive data port B
17 RTxC A I RS-232/423 Secondary/transmit clock
(receive) port
18 TRxC B I RS-232/423 Receive/transmit clock port B
(pullup)
19 RTS B O RS-232/423 Request to send port B
20 DTR A O RS-232/423 Data terminal ready port A
21 N.C. None GND Not connected
22 N.C. None GND Not connected
23 N.C. None GND Not connected
24 TxC A O RS-232/423 Transmit clock port A
25 TxC B O RS2-32/423 Transmit clock port B
TABLE C-4 Serial Ports A and B Connector Pin Assignments (Continued)
Pin Function I/O Level Signal Description
12345678
RJ45
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