WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 200

• Manufacturer Part Number: WG82574L S LBA9
• Description: CONTROLLER, ENET, INTEL 82574L, 64PQFN
• Manufacturer: Intel

Specifications of WG82574L S LBA9

• Ethernet Type: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: 0°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

8.4.1
8.4.2
8.4.2.1
8.4.3
200
This section describes how the SMBus interface in the 82574L operates in pass-through
mode.
General
The SMBus sideband interface includes the standard SMBus commands used for
assigning a slave address and gathering device information as well as Intel®
proprietary commands used specifically for the pass-through interface.
Pass-Through Capabilities
This section details the specific manageability capabilities the 82574L provides while in
SMBus mode.
The pass-through traffic is carried by the sideband interface as described in
Packet Filtering
Since the host operating system and the MC both use the 82574L to send and receive
Ethernet traffic, there needs to be a mechanism by which incoming Ethernet packets
can be identified as those that should be sent to the MC rather than the host operating
system.
In order to determine the types of traffic that is forwarded to the MC over the sideband
interface, the 82574L supports a manageability receive filtering mechanism. This
mechanism is used to determine if a received packet should be forwarded to the MC or
to the host.
Following is a list of the filtering capabilities available for the SMBus interface with the
82574L:
Each of these are discussed in detail later in this section.
Manageability Receive Filtering
This section describes the manageability receive packet filtering flow when using the
SMBus pass-though interface. The description applies to the capability ofthe 82574’s
LAN port. A packet that is received bythe 82574 can be discarded, sent to host
memory, sent to the external MC or to both the external MC and host memory.
There are two modes of receive manageability filtering:
1. Receive All – all received packets are routed to the MC in this mode. It is enabled
• These services are not available in NC-SI mode.
• RMCP/RMCP+ ports
• Flexible UDP/TCP port filters
• 128-byte flexible filters
• VLAN
• IPv4 address
• IPv6 address
• MAC address filters
by setting the RCV_TCO_EN bit (which enables packets to be routed to the MC) and
RCV_ALL bit (which routes all packets to the MC) in the management control
(MANC) register.
82574 GbE Controller—System Manageability
section
8.2.