Networking Silicon — GD82559ER

.

Power State

Link

82559ER Functionality

 

 

 

 

 

 

D0u

Don’t care

Power-up state

• PCI slave access

 

 

 

 

 

 

Valid

Full functionality at full power and wake on invalid

D0a

link

 

 

 

 

Invalid

Full functionality at full power and wake on valid link

 

 

 

 

 

Wake-up on “interestin g” packets and link

 

Valid

invalid

D1

 

• PCI configuration access

 

 

 

Invalid

• Wake on link valid

 

• PCI configuration access

 

 

 

 

 

D2

Valid

Same functionality as D1 (link valid)

 

 

Invalid

Detection for valid link and no link integrity

 

 

 

 

D3 (with power)

Valid

Same functionality as D1 (link valid)

 

 

Invalid

Detection for valid link and no link integrity

 

 

 

 

Dx (x>0 without

Don’t Care

No wake-up functionality

PME#)

 

 

 

 

 

4.2.4.6Auxiliary Power Signal

The 82559ER senses whether it is connected to the PCI power supply or to an auxiliary power

supply (VAUX) via the FLA1/AUXPWR pin. The auxiliary power detection pin (multiplexed with FLA1) is sampled when the PCI RST# or ALTRST# signals are active. An external pull-up resistor

should be connected to the 82559ER if it is fed by VAUX; otherwise, the FLA1/AUXPWR pin should be left floating. The presence of AUXPWR affects the value reported in the Power Management Capability Register (PCI Configuration Space, offset DEH). The Power Management Capability Register is described in more detail in Section 7.1.18, “Power Management Capabilities Register” on page 54 .

4.2.4.7Alternate Reset Signal

The 82559ER’s ALTRST# input pin functions as a power-on reset input. Following ALTRST# being driven low, the 82559ER is initialized to a known state. In systems that support auxiliary power, this pin should be connected to the auxiliary power’s power stable signal (power good) of the 82559ER’s power source. In a LAN on Motherboard solution, this signal is available on the system. In network adapter implementations, an external analog device connected to the auxiliary power supply can be used to produce this signal. In systems that do not have an auxiliary power source, the ALTRST# signal should be tied to a pull-up resistor.

4.2.4.7.1Isolate Signal

When the 82559ER is connected to VAUX, it may be powered on while the PCI bus is powered off. In this case, the 82559ER isolates itself from the PCI bus. The 82559ER has a dedicated

ISOLATE# pin that should be connected to the PCI power source’s stable power signal (power good). Whenever the PCI Bus is in the B3 state, the PCI power good signal becomes inactive and the 82559ER isolates itself from the PCI bus. During this state, the 82559ER ignores all PCI signals including the RST# and CLK signals. It also tri-states all PCI outputs, except the PME# signal. In the transition to an active PCI power state (in other words, from B3 power state to B0 power state), the PCI power good signal shifts high.

Datasheet

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Intel GD82559ER Auxiliary Power Signal, Alternate Reset Signal, Isolate Signal, Power State Link 82559ER Functionality

GD82559ER specifications

The Intel GD82559ER is a highly regarded network interface controller (NIC) designed for use in various computing environments, primarily for stable connectivity in both desktop and server applications. Released as part of the 82559 family of Ethernet controllers, the GD82559ER features advanced technologies that enhance performance, reliability, and manageability.

One of the standout features of the 82559ER is its ability to support both 10/100 Mbps Ethernet. This dual capability allows the controller to operate in a wide range of network settings, making it adaptable to legacy systems while also providing support for modern Ethernet standards. This versatility is crucial for organizations looking to maintain operational effectiveness without the need for immediate upgrades to their existing infrastructure.

The GD82559ER employs a PCI interface, which allows it to connect with various devices and motherboards easily, making it a go-to choice for manufacturers aiming for integration in their systems. It also includes features like Auto-Negotiation, enabling the NIC to automatically detect and select the appropriate speed and duplex mode for optimal performance. This capability is essential in dynamic networking environments, where devices from various generations coexist.

Power management is another critical aspect of the GD82559ER. The controller supports advanced power-saving features like PCI Power Management, reducing energy consumption during low-usage periods. This not only contributes to lower operational costs but also aligns with modern eco-friendly initiatives in technology.

Additionally, the GD82559ER comes equipped with advanced diagnostics and monitoring capabilities. This enhances the network's manageability by allowing administrators to track performance metrics and diagnose issues effectively. Through its onboard diagnostics, the controller aids in ensuring a stable network connection, allowing for timely interventions when issues arise.

The controller is also designed with a robust architecture that supports various operating systems, facilitating a broad implementation across different platforms. As a result, the GD82559ER has become a reliable option for system builders and enterprises focused on building dependable networking solutions.

Overall, the Intel GD82559ER is a versatile, high-performance network interface controller that continues to serve as a foundational component for computer systems that require efficient, reliable networking capabilities. Its combination of technologies and features makes it a popular choice in diverse computing environments.