1 nic configuration/control, 2 nic connectors – Compaq 4000N User Manual
Page 126
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