82575 Ethernet Controller Design Guide

Internal_Power_On

_Reset assertion

L3

Dr

 

PERST# de-

 

 

assertion

L0

 

 

 

 

 

 

L2

 

PERST#

 

 

 

assertion

 

 

 

PERST#

 

 

Enable

 

 

master Access

 

assertion

 

 

 

 

 

 

 

Write 00

PERST#

 

 

 

to Power State

 

 

 

assertion

 

 

 

 

 

 

 

L1

 

L0

 

 

Write 11

 

 

to Power State

 

D3

L0s

D0u

L1

L0s

D0a

L1

Figure 8. PCIe Power Management Flow/State Diagram

3.4.4.282575 Ethernet Controller Power Management

If DisableD3Cold=0, the 82575 uses the AUX_PWR indication that auxiliary power is available to the controller, and therefore advertises D3cold Wake Up support. The amount of power required for the function (which includes the entire network interface card) is advertised in the Power Management Data Register, which is loaded from the

EEPROM.

If D3cold is supported, the PME_En and PME_Status bits of the Power Management Control/Status Register (PMCSR), as well as their shadow bits in the Wake Up Control Register (WUC) will be reset only by the power up reset (detection of power rising).

The only effect of setting AUX_PWR to 1 is advertising D3cold Wake Up support and changing the reset function of PME_En and PME_Status. AUX_PWR is a strapping option in the 82575.

21

Page 27
Image 27
Intel 317698-001 manual L0s D0u D0a, 4.2 82575 Ethernet Controller Power Management

317698-001 specifications

The Intel 317698-001 is a prominent and highly regarded component in the realm of computer hardware. This product is part of Intel's extensive portfolio, designed primarily for enhancing computing performance, efficiency, and reliability. It is typically associated with server motherboards and is known for its robust architecture, making it ideal for enterprise-level applications.

One of the standout features of the Intel 317698-001 is its compatibility with multiple Intel processors, which provides flexibility for users looking to upgrade or configure their systems. This compatibility ensures that enterprises can choose from a range of processors according to their specific workload requirements, allowing for tailored performance enhancements.

The product is built on the foundation of advanced technologies, such as Intel's Turbo Boost and Hyper-Threading. Turbo Boost allows the processor to operate at higher frequencies than its base clock speed when demand increases, providing a significant performance boost when needed. Hyper-Threading enables multiple threads to run simultaneously on each core, which can lead to improved multitasking capabilities and more efficient resource utilization.

Memory bandwidth is another vital characteristic of the Intel 317698-001. This component supports high-speed DDR4 memory, offering increased bandwidth that is crucial for data-intensive applications. The architecture is designed to work seamlessly with ECC (Error-Correcting Code) memory, enhancing system reliability by detecting and correcting internal data corruption.

In terms of connectivity, the Intel 317698-001 features multiple PCIe lanes, supporting various expansion cards for enhanced functionality. This includes the integration of NVMe drives for faster storage solutions, which is essential for modern applications that demand quick data access and retrieval.

Security is also a priority with the Intel 317698-001, which incorporates hardware-based security features to protect data integrity and prevent unauthorized access. These features include Intel Trusted Execution Technology, which creates a secure environment for executing sensitive code.

Overall, the Intel 317698-001 stands out with its combination of performance, versatility, and security. It is an ideal choice for businesses looking to enhance their computing capabilities while ensuring system reliability and security in an increasingly data-driven world. With its robust technological foundation, it continues to play a critical role in modern computing environments.