1 nic configuration/control, 2 nic connectors – Compaq 4000N User Manual

Page 126

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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

1

2

4 3

8 7 6 5

Pin

Description

1

Transmit

2

Transmit Low

3

Receive

6

Receive Low

1

15

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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