Compaq Deskpro 4000N - Figure 5-10. Ethernet Rj-45 C; Figure 5-9. Ethernet Aui C; Nic Configuration;Control; Nic Connectors

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Chapter 5 Input/Output Interfaces

Compaq Deskpro 4000N and 4000S Personal Computers

First Edition – September 1997

5-36

5.7.1 NIC CONFIGURATION/CONTROL

The NIC is a PCI device and configured through PCI configuration space registers. The NIC is

controlled through I/O registers mapped in the 300h-30Fh range.

5.7.2 NIC CONNECTORS

The network interface provides two choices of connection to a LAN system as shown in the

following figures.

Figure 5–9

. Ethernet AUI Connector (DB-15, viewed from rear)

Figure 5–10

. Ethernet RJ-45 Connector

12438765

Pin Description

1 Transmit

2 Transmit Low

3 Receive

6 Receive Low

Pin Description Pin Description

1 Ground 9 Control In RTN

2 Control In 10 TX Data RTN

3 TX Data 11 Ground

4 Ground 12 RX Data RTN

5 RX Data 13 +12 VDC

6 Ground 14 Ground

7 n/c 15 n/c

8 Ground

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