Appendix B

Ethernet Connectors and Pinouts

The Condor supports both the AUI and 10BaseT versions of the Ethernet 802.3 specification. The card will have a 15 pin "D" connector used for the AUI signals and a RJ45 connector for unshielded twisted pair (10BaseT). Transformers are used with both interfaces to isolate the external cable from the interface electronics.

The single-channel daughter card is manufactured with both of connectors. The connector used by the channel is automatically selected by the hardware when a cable is connected.

A dual-channel daughter card and dual channel motherboard are manufactured with only one type of connector for each channel. For example, a dual channel AUI board will have two DB15 connectors. A dual channel 10BaseT board will have two RJ45 connectors.

10BaseT Connector Signals

The 10BaseT signals and connector pinout for the RJ45 connector are shown in the following table.

Table C-41. RJ45 (10BaseT) Connector Signals

 

 

 

 

 

 

 

Symbol

Dir

Pin

Description

 

 

 

 

 

 

 

 

TXPx

O

1

Transmit Data Positive

 

 

TXNx

O

2

Transmit Data Negative

 

 

 

 

 

 

 

 

RXPx

I

3

Receive Data Positive

 

 

 

 

 

 

 

 

RXNx

I

6

Receive Data Negative

 

 

 

 

 

 

 

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