IBM 86594RY - Netfinity 5000 - 4RY, Hardware Maintenance Manual

Page: 99 / 220

Ethernet connector
The system board in the Netfinity 5000 contains an
Ethernet
controller. The controller has an external RJ-45
connector on the rear of the server that is used with a
category 3, 4, or 5 twisted-pair cable. The connector
enables an Ethernet network to attach to the internal
transceiver in the server. The 100BASE-TX Fast Ethernet
standard requires that the cabling in the network be
Category 5 or higher.
See “Configuring the Ethernet controller” on page 32 for
additional information about the Ethernet controller.
Table 3 shows the pin-number assignments for the RJ-45
connector. These assignments apply to both 10BASE-T
and 100-BASETX devices.
10BASE-T or 100 BASE-TX
UTP Cable
RJ-45 Modular Plug Connector
1
2
3
Pins
6
Table 3. Ethernet Connector Pin-Number
Assignments
Pin Signal Pin Signal
1 Transmit data
+
5 Reserved
2 Transmit data
−
6 Receive data
−
3 Receive data
+
7 Reserved
4 Reserved 8 Reserved
Netfinity 5000 - Type 8659
91