Lenovo AD80582QH056003 Datenblatt PDF herunterladen (Seite 12)

Introduction

12 Intel® Xeon® Processor 7400 Series Datasheet

• Symmetric Agent – A symmetric agent is a processor which shares the same I/O

subsystem and memory array, and runs the same operating system as another

processor in a system. Systems using symmetric agents are known as Symmetric

Multiprocessing (SMP) systems.

• Integrated Heat Spreader (IHS) – A component of the processor package used

to enhance the thermal performance of the package. Component thermal solutions

interface with the processor at the IHS surface.

• Thermal Design Power – Processor thermal solutions should be designed to meet

this target. It is the highest expected sustainable power while running known

power intensive real applications. TDP is not the maximum power that the

processor can dissipate.

• Platform Environment Control Interface (PECI) – A proprietary one-wire bus

interface that provides a communication channel between Intel processor and

controller components to external thermal monitoring devices, for use in fan speed

control. PECI communicates readings from the processor’s Digital Thermal Sensors

(DTS). The DTS replaces the thermal diode available in previous processors.

• Enhanced Intel SpeedStep

Technology — Enhanced Intel SpeedStep

Technology is the next generation implementation of the Geyserville technology

which extends power management capabilities of servers.

• Intel

64 – An enhancement to Intel's IA-32 architecture that allows the

processor to execute operating systems and applications written to take advantage

of the 64-bit extension technology. Further details on can be found in the 64-bit

Extension Technology Software Developer's Guide at

http://developer.intel.com/technology/64bitextensions/.

• Intel

Virtualization Technology – Processor virtualization which when used in

conjunction with Virtual Machine Monitor software enables multiple, robust

independent software environments inside a single platform.

• VRM (Voltage Regulator Module) – DC-DC converter built onto a module that

interfaces with a card edge socket and supplies the correct voltage and current to

the processor based on the logic state of the processor VID bits.

• EVRD (Enterprise Voltage Regulator Down) – DC-DC converter integrated onto

the system board that provides the correct voltage and current to the processor

based on the logic state of the processor VID bits.

• V

– The processor core power supply.

• V

CCPLL

– The processor Phase Lock Loop (PLL) power supply.

• V

– The processor ground.

• V

– FSB termination voltage. (Note: In some Intel processor EMTS documents,

is instead called V

CCP

• Processor Information ROM (PIROM) — A memory device located on the

processor and accessible via the System Management Bus (SMBus) which contains

information regarding the processor’s features. This device is shared with the

Scratch EEPROM, is programmed during manufacturing, and is write-protected.

• Scratch EEPROM (Electrically Erasable, Programmable Read-Only Memory)

— A memory device located on the processor and addressable via the SMBus which

can be used by the OEM to store information useful for system management.

• SMBus — System Management Bus. A two-wire interface through which simple

system and power management related devices can communicate with the rest of

the system. It is based on the principals of the operation of the I

C* two-wire serial

bus from Phillips Semiconductor.

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