WG82574IT S LBAC Intel, WG82574IT S LBAC Datasheet - Page 198

• Manufacturer Part Number: WG82574IT S LBAC
• Description: CONTROLLER, ENET, INTEL 82574IT, 64PQFN
• Manufacturer: Intel

Specifications of WG82574IT S LBAC

• Ethernet Type: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: QFN
• No. Of Pins: 64
• Package / Case: QFN
• Interface Type: I2C, JTAG, PCI, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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System Manageability
Network management is an increasingly important requirement in today's networked
computer environment. Software-based management applications provide the ability to
administer systems while the operating system is functioning in a normal power state
(not in a pre-boot state or powered-down state). The Intel® System Management Bus
(SMBus) Interface and the Network Controller - Sideband Interface (NC-SI) for fills the
the 82574 management void that exists when the operating system is not running or
fully functional.
This is accomplished by providing a mechanism by which manageability network traffic
can be routed to and from a Management Controller (MC). The 82574L provides two
different and mutually exclusive bus interfaces for manageability traffic. The first is the
Intel® proprietary SMBus interface; several generations of Intel® Ethernet controllers
have provided this same interface that operates at speeds of up to 400 KHz.
The second interface is NC-SI, which is a new industry standard interface created by
the DMTF specifically for routing manageability traffic to and from a MC. The NC-SI
interface operates at 100 Mb/s full-duplex speeds.
Scope
This section describes the supported management interfaces and hardware
configurations for platform system management. It describes the interfaces to an
external MC, the partitioning of platform manageability among system components,
and the functionality provided by the 82574L in each of the platform configurations.
Pass-Through (PT) Functionality
Pass-Through (PT) is the term used when referring to the process of sending and
receiving Ethernet traffic over the sideband interface. The 82574L has the ability to
route Ethernet traffic to the host operating system as well as the ability to send
Ethernet traffic over the sideband interface to an external MC.
82574 GbE Controller—System Manageability