Intel GD82559ER manual Wake-up Events, Interestin g Packet Events

Networking Silicon — GD82559ER

•ISOLATE# trailing edge

The internal initialization signal resets the PCI Configuration Space, MAC configuration, and memory structure.

The behavior of the PCI RST# signal and the internal 82559ER initialization signal are shown in the figure below.

PCI RST#

Internal hardware reset

PCI RST#

Internal hardware reset

ISOLATE#

Internal hardware reset

D0 - D2 power state

D3 power state

640 ns

Internal reset

due to ISOLATE#

640 ns

Figure 10. 82559ER Initialization upon PCI RST# and ISOLATE#

4.2.5Wake-up Events

There are two types of wake-up events: “Interesting” Packets and Link Status Change. These two events are detailed below.

Note: The wake-up event is supported only if the PME Enable bit in the Power Management Control/ Status (PMCSR) register is set. (The PMCSR is described in Section 7.1.19, “Power Management Control/Status Register (PMCSR)” on page 55 .)

4.2.5.1“Interestin g” Packet Events

In the power-down state, the 82559ER is capable of recognizing “interesting” packets. The 82559ER supports pre-defined and programmable packets that can be defined as any of the following:

•ARP Packets (with Multiple IP addresses)

•Direct Packets (with or without type qualification)

•Neighbor Discovery Multicast Address Packet (‘ARP’ in IPv6 environment)

•NetBIOS over TCP/IP (NBT) Query Packet (under IPv4)

•Internetwork Package Exchange* (IPX) Diagnostic Packet

This allows the 82559ER to handle various packet types. In general, the 82559ER supports programmable filtering of any packet in the first 128 bytes.

Datasheet 27