Functional Architecture
Intel® Server Board S5500WB TPS
30
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)
On
Active Connection
Blinking
Transmit / Receive activity
Table 8. NIC 2 Status LED
LED Color
LED State
NIC State
Green/Amber (Right)
Off
10 Mbps
Green
100 Mbps
Amber
1000 Mbps
Green (Left)
On
Active Connection
Blinking
Transmit / Receive activity
Summary of Contents for S5500WB
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