WG82574L S LBA8 Intel, WG82574L S LBA8 Datasheet - Page 96

• Manufacturer Part Number: WG82574L S LBA8
• Manufacturer: Intel

Specifications of WG82574L S LBA8

• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

5.5.3.1.5
5.5.3.1.6
96
Accepting broadcast Magic Packets* for wake up purposes when the Broadcast Accept
bit of the Receive Control Register (RCTL.BAM) is 0b is a change from previous devices,
which initialized RCTL.BAM to 1b if APM was enabled in the NVM, but then required that
bit to be 1b to accept broadcast Magic Packets*, unless broadcast packets passed
another perfect or multicast filter.
ARP/IPv4 Request Packet
The 82574 supports receiving ARP Request packets for wake up if the ARP bit is set in
the WUFC. Four IPv4 addresses are supported, which are programmed in the IPv4
Address Table (IP4AT). A successfully matched packet must contain a broadcast MAC
address, a protocol type of 0x0806, an ARP opcode of 0x01, and one of the four
programmed IPv4 addresses. The 82574 also handles ARP request packets that have
VLAN tagging on both Ethernet II and Ethernet SNAP types.
Directed IPv4 Packet
The 82574 supports receiving directed IPv4 packets for wake up if the IPV4 bit is set in
the WUFC. Four IPv4 addresses are supported, which are programmed in the IPv4
Address Table (IP4AT). A successfully matched packet must contain the station's MAC
address, a protocol type of 0x0800, and one of the four programmed IPv4 addresses.
The 82574 also handles directed IPv4 packets that have VLAN tagging on both Ethernet
II and Ethernet SNAP types.
Offset
12
12
12
14
16
18
19
20
22
28
32
38
0
6
6
6
8
4
2
2
2
1
1
2
6
4
6
4
Bytes
# of
Destination Address
Source Address
Possible LLC/SNAP Header
Possible VLAN Tag
Type
Hardware Type
Protocol Type
Hardware Size
Protocol Address Length
Operation
Sender Hardware Address
Sender IP Address
Target Hardware Address
Target IP Address
Field
82574 GbE Controller—Power Management and Delivery
0x0806
0x0001
0x0800
0x06
0x04
0x0001
-
-
-
IP4AT
Value
Compare
Skip
Skip
Skip
Compare
Compare
Compare
Compare
Compare
Compare
Ignore
Ignore
Ignore
Compare
Action
MAC Header –
processed by main
address filter
ARP
May match any of four
values in IP4AT
Comment