Visara SCON-25L Reference Manual - Manual (Page 19)

707028-007 2-9
Chapter 2. Installation
A wiring topology using 10BASE-T specifies a wiring hub, cable arranged in a
star configuration, and unshielded twisted-pair cable. Each node has a separate
cable run that must not exceed 100 meters (328 ft) from the node to the hub.
100BASE-TX Operation
100BASE-TX is the IEEE 802.3u standard for Fast Ethernet signaling over Category
5 UTP or STP wire at 100 Mbps.
Based on an extension to the IEEE 802.3 Ethernet specification, Fast Ethernet’s
characteristics include:
• A data rate of 100 Mbps.
• A broadcast architecture.
• A specific media-access control (MAC) scheme.
A wiring topology using 100BASE-TX specifies a wiring hub, cable arranged in a star
configuration, and Category 5 UTP or STP wiring. Each node has a separate cable run
that must not exceed 100 meters (328 ft) from the node to the hub.
Figure 2.3 shows the RJ-45 connector pin assignments for the 10/100 Mbps
Ethernet NIC.
Port Connector
8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8
TxD+
TxD-
RxD+
RxD-
1
2
3
6
1
2
3
6
TxD+
TxD-
RxD+
RxD-
Pins 4, 5, 7 and 8 are not used
Figure 2.3 RJ-45 Connector Pin Assignments
Figure 2.4 LEDS