EP80579 Datasheet, PDF (1406/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
• Be the broadcast address (FF.FF.FF.FF.FF.FF)
• Match the value in Receive Address Register 0 (RAH0, RAL0). This is initially loaded
from the EEPROM but may be changed by the driver.
• Match any other address filtering enabled by the driver.
The controller will search for the contents of Receive Address Register 0 (RAH0, RAL0)
as the embedded IEEE address. It will consider any non-FF byte after a series of at
least 6 FFs to be the start of the IEEE address for comparison purposes. (I.E. It will
catch the case of 7 FFs followed by the IEEE address). As soon as one of the first 96
bytes after a string of FFs doesn't match, it will continue to search for anther set of at
least 6 FFs followed by the 16 copies of the IEEE address later in the packet. Note that
this definition precludes the first byte of the destination address from being FF.
A Magic Packet's destination address must match the address filtering enabled in the
configuration registers with the exception that broadcast packets will be considered to
match even if the Broadcast Accept bit of the Receive Control Register (RCTL.BAM) is 0.
If APM Wakeup is enabled in the EEPROM, the controller will start up with the Receive
Address Register 0 (RAH0, RAL0) loaded from the EEPROM. This is to permit the
controller to accept packets with the matching IEEE address before the driver comes
up.
Offset
0
...
Any
Any +
6
# of
bytes
6
...
6
96
Field
Value
Action
Comment
Destination
Address
...
Synchronizing
Stream
16 copies of Node
Address
FF FF FF FF FF FF +
Node Address*16
Compare
Skip
Compare
Compare
MAC Header- processed by
main address filter
Compared to Receive Address
Register 0 (RAH0, RAL0)
37.5.10.3.5 ARP/IPv4 Request Packet
The GbE controller will support reception of ARP Request packets for wake up if the ARP
bit is set in the Wake Up Filter Control Register (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 Type of 0x0806, an ARP
OPCODE of 0x01, and one of the four programmed IPv4 addresses. The GbE controller
also handles ARP Request packets that have VLAN tagging on both Ethernet II and
Ethernet SNAP types.
Offset
0
6
12
12+S
# of
bytes
6
6
S=(0/4)
D=(0/8)
Field
Value
Destination
Address
Source Address
Possible VLAN Tag 8100h + check ID
Possible LLC/
SNAP Header
Type <= 1500 +
AAAA03000000h
Action
Comment
Compare
Skip
Check
MAC Header- processed by
main address filter
Check
12+D+
S
2
ARP Header
14+D+
S
2
Type
HW Type
0806h
0001h
Compare ARP
Compare
Intel^® EP80579 Integrated Processor Product Line Datasheet
1406
August 2009
Order Number: 320066-003US