User`s manual

User’s Manual 39
Chapter 5. LAN Adapter
The on-board LAN adapter integrated of Single Chip Fast Ethernet Controller with
options of one or dual LAN solution, and also the LAN chip option of VIA VT6103
solution. It is highly integrated and requires no “glue” logic external memory on
board. It runs in the bus master mode and directly sending/receiving Ethernet
packet to/from memory. The On-board LAN adapter can directly fetch the system
CPU. Also, it can transfer data Directly between I/O devices and system memory in
the 32-bit bus master mode that provides low CPU utilization.
It complies with the IEEE 802.3x standard, IEEE802.3 standard and PCI Local Bus
version 2.1 and transmits data on the network at 100 Mbps or 10 Mbps. It also
operates in full-duplex mode that doubles the network speed up to 20/200 Mbps
when working with Fast Switching Hub. Built-in one RJ-45 port for connection of
100Base-TX Fast Ethernet or 10Base-T Ethernet network, and automatically
senses the connection type.
5-1. Features
• Full compliancy with PCI Rev. 2.1
• Complies with the Ethernet/IEEE 802.3u 100Base-TX and 10 Base-T industry
standard
• Supports full-duplex operations, thus doubling the network speed up to
20Mbps on 10 Base-T Ethernet or 200Mbps on 100 Base-TX Fast Ethernet
when setting in full duplex mode
• Two LED indicators to report network status
• One RJ-45 connector with Auto-sense cable type of 10 or 100Mbps network
operation
• Supports PCI clock speed up to 33MHz, capable of zero wait states
• Supports Remote Boot ROM by system BIOS
• Provides a comprehensive setup program for displaying the adapter
configuration and includes diagnostic on board or network tests
• Complete drivers for Novell, Windows NT and Windows 95/98 Packet driver etc
40 The ENDAT-3400M System Board
5-2. UTP Cable / RJ-45 Jack Definition
Straight through twisted pair cable is typically used to connect a hub to a server or
workstation. In a straight through connection, Pin 1 at the server, Pin 2 at the hub
connects to Pin 2 at the server, and so on. Figure A-1 shows the locations of pins on
a standard RJ-45 plug on a twisted-pair cable.
Table A-1 shows the wiring in a straight-through twisted-pair cable (Pins 4, 5, 7 and
8 are not used).
Twisted Pair
Number
Pin Number
Signal
Description
To Pin Number
Signal
Description
1
1
2
TD+
TD–
Æ
1
2
TD+
TD–
2
3
6
RD+
RD–
Æ
3
6
RD+
RD–
RJ-45 Connector Pin Assignments
Figure A-1 shows the RJ-45 Connector pin assignments