Intel S5500WBR Manual De Usuario

Functional Architecture

Intel® Server Board S5500WB TPS

Revision 1.9

Intel order number E53971-008

3.8 Network Interface Controller (NIC)

Network interface support is provided from the onboard Intel

82576 NIC, which is a single,

compact component with two fully integrated GbE Media Access Control (MAC) and Physical
Layer (PHY) ports. The Intel

82576 NIC provides the server board with support for dual LAN

ports designed for 10/100/1000 Mbps operation. Refer to the Intel

82576 Gigabit Ethernet

Controller Datasheet (Document#: 82576) for full details of the NIC feature set.

The NIC device provides a standard IEEE 802.3 Ethernet interface for 1000BASE-T, 100BASE-
TX, and 10BASE-T applications (802.3, 802.3u, and 802.3ab) and is capable of transmitting
and receiving data at rates of 1000 Mbps, 100 Mbps, or 10 Mbps.

The Intel

82576 NIC is powered off the main standby voltage rail via DC to DC Voltage

regulators for efficiency purposes. It is on standby power so the BMC can send out-of-band
management traffic over the RMII bus to the network during sleep state S5.

The NIC supports the normal RJ-45 LINK/Activity speed LEDs as well as the Proset ID function.
These LEDs are powered from a Standby voltage rail.

The link / activity LED (at the right of the connector) indicates network connection when on, and
transmit / receive activity when blinking. The speed LED (at the left of the connector) indicates
1000-Mbps operation when amber, 100-Mbps operation when green, and 10-Mbps when off.
The following table provides an overview of the LEDs.

Table 7. NIC 1 Status LED

LED Color

LED State

NIC State

Green/Amber (Left)

Off

10 Mbps

Green

100 Mbps

Amber

1000 Mbps

Green (Right)

Active Connection

Blinking

Transmit / Receive activity

Table 8. NIC 2 Status LED