EP80579 Datasheet, PDF (1405/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
37.5.10.3.1 Directed Exact Packet
The GbE controller will generate a wakeup event upon reception of any packet whose
destination address matches one of the 16 valid programmed Receive Addresses if the
Directed Exact Wake Up Enable bit is set in the Wake Up Filter Control Register
(WUFC.EX).
Offset
0
# of
bytes
6
Field
Destination
Address
Value
Programmable
Action
Comment
Compare
Match any pre-programmed
address
37.5.10.3.2 Directed Multicast Packet
For multicast packets, the upper bits of the incoming packet's destination address index
a bit vector in the Multicast Table Array, that indicates whether to accept the packet. If
the Directed Multicast Wake Up Enable bit set in the Wake Up Filter Control Register
(WUFC.MC) and the indexed bit in the vector is one then the controller will generate a
wakeup event. The exact bits used in the comparison are programmed by software in
the Multicast Offset field of the Receive Control Register (RCTL.MO).
If the MAC has been configured for promiscuous mode, a multicast wakeup will occur if
a broadcast packet is received. This is because a broadcast message is a special type of
multicast message. Refer to 802.3, section 3.2.3.1.
Offset
0
# of
bytes
6
Field
Destination
Address
Value
Action
Comment
Compare See paragraph
37.5.10.3.3 Broadcast
If the Broadcast Wake Up Enable bit in the Wake Up Filter Control Register (WUFC.BC)
is set the controller will generate a wake up event when it receives a broadcast packet.
Offset
0
# of
bytes
6
Field
Destination
Address
Value
FF * 6
Action
Compare
Comment
37.5.10.3.4 Magic Packet
Magic Packet Technology Details: Once the LAN controller has been put into the
Magic Packet mode, it scans all incoming frames addressed to the node for a specific
data sequence, which indicates to the controller that this is a Magic Packet frame. A
Magic Packet frame must also meet the basic requirements for the LAN technology
chosen, such as SOURCE ADDRESS, DESTINATION ADDRESS (which may be the
receiving station's IEEE address or a MULTICAST address which includes the
BROADCAST address), and CRC. The specific data sequence consists of 16 duplications
of the IEEE address of this node, with no breaks or interruptions. This sequence can be
located anywhere within the packet, but must be preceded by a synchronization
stream. The synchronization stream allows the scanning state machine to be much
simpler. The synchronization stream is defined as 6 bytes of FFh. The device will also
accept a BROADCAST frame, as long as the 16 duplications of the IEEE address match
the address of the machine to be awakened.
The controller will expect the destination address to either:
August 2009
Order Number: 320066-003US
Intel^® EP80579 Integrated Processor Product Line Datasheet
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