Specifications

Intel® Server Board S3420GPRX TPS Functional Architecture
Revision 1.1
Intel order number E92065-001
31
3.12 Network Interface Controller (NIC)
The Intel
®
Server Board S3420GPRX supports five network ports. One is provided by the
onboard Intel
®
82574L GbE PCI Express network controller; the others are provided by two
onboard Intel
®
82576 Gigabit Network controllers:
 NIC port 1 and 2 are provided by on board Intel
®
82576 Gigabit network controller 1.
 NIC port 3 and 4 are provided by on board Intel
®
82576 Gigabit network controller 2.
 NIC port 5 is provided by on board Intel
®
82574L Gigabit network controller.
3.12.1 GigE Controller 82574L
Intel
®
82574 family (82574L and 82574IT) are single, compact, low-power components that offer
a fully-integrated Gigabit Ethernet Media Access Control (MAC) and Physical Layer (PHY) port.
The 82574 uses the PCI Express* architecture and provides a single-port implementation in a
relatively small area so it can be used for server and client configurations as a LAN on
Motherboard (LOM) design.
External interfaces provided on the 82574:
 PCIe Rev. 2.0 (2.5 GHz) x1
 MDI (Copper) standard IEEE 802.3 Ethernet interface for 1000BASE-T, 100BASETX,
and 10BASE-T applications (802.3, 802.3u, and 802.3ab)
 NC-SI or SMBus connection to a Manageability Controller (MC)
 EEE 1149.1 JTAG (note that BSDL testing is NOT supported)
3.12.2 GigE Controller 82576
Intel
®
82576 is a Dual Port 10/100/1000 x4 PCI Express Gen2 Gigabit Ethernet Controller for
Server
It supports the following features:
 PCIe Gen2 x4 connected to PCI-E switch
 Intel
®
I/O Acceleration Technology
 Virtualization
 Advanced Manageability
 Intel
®
Active Management Technology
 RMII or Smbus Interfaces
 IPMI BMC Pass-thru
 ECC on all memory
 MSI-X support
 Multiple Tx & Rx Queues
 Offloads compatible with multiple VLAN tags
 25mm x 25mm FCBGA
 ~2.8W total power consumption (2 port operation)