3Com 3C10220 Network Card User Manual


 
42 APPENDIX B: TECHNICAL SPECIFICATIONS AND PIN ASSIGNMENTS
Pin assignments are the same for the 10BASE-T and 100BASE-TX RJ45
connectors.
Table 12 Pin Assignments
Pin Number Signal Function
Input Ports (Data + Power)
1 RxData + Receive data from DTE / NIC
2 RxData Receive data from DTE / NIC
3 TxData + Transmit data to DTE / NIC
4 24vDC + Positive signal feeding
5 24vDC + Positive signal feeding
6 TxData Transmit data to DTE / NIC
7 24vDC () Return signal feeding
8 24vDC () Return signal feeding
Input Ports (Data only)
1 TxData + Transmit data to switch
2 TxData Transmit data to switch
3 RxData + Receive data from switch
4 Not assigned Terminated
5 Not assigned Terminated
6 RxData Receive data from switch
7 Not assigned Terminated
8 Not assigned Terminated