42APPENDIX 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

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3Com 3C10220 manual Pin Assignments, Pin Number Signal Function