Intel W3530 AT80601000897AB User Manual

10

Intel® Xeon® Processor 3500 Series Datasheet Volume 1 

A ‘#’ symbol after a signal name refers to an active low signal, indicating a signal is in 
the active state when driven to a low level. For example, when RESET# is low, a reset 
has been requested. Conversely, when VTTPWRGOOD is high, the V

TT

 power rail is 

stable.

‘_N’ and ‘_P’ after a signal name refers to a differential pair.

Commonly used terms are explained here for clarification:

• Intel® Xeon® Processor 3500 Series — The entire product, including processor 

substrate and integrated heat spreader (IHS).

• 1366-land LGA package — The Intel® Xeon® Processor 3500 Series is available 

in a Flip-Chip Land Grid Array (FC-LGA) package, consisting of the processor 
mounted on a land grid array substrate with an integrated heat spreader (IHS).

• LGA1366 Socket — The processor (in the LGA 1366 package) mates with the 

system board through this surface mount, 1366-contact socket.

• DDR3 — Double Data Rate 3 Synchronous Dynamic Random Access Memory 

(SDRAM) is the name of the new DDR memory standard that is being developed as 
the successor to DDR2 SRDRAM.

• Intel

 QPI)— Intel QPI is a cache-coherent, 

point-to-point link based electrical interconnect specification for Intel processors 
and chipsets.

• Integrated Memory Controller — A memory controller that is integrated into the 

processor die.

• 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.

• Functional Operation — Refers to the normal operating conditions in which all 

processor specifications, including DC, AC, signal quality, mechanical, and thermal, 
are satisfied.

• Enhanced Intel SpeedStep

 Technology — Enhanced Intel SpeedStep 

Technology allows the operating system to reduce power consumption when 
performance is not needed. 

• Execute Disable Bit — Execute Disable allows memory to be marked as 

executable or non-executable, when combined with a supporting operating system. 
If code attempts to run in non-executable memory the processor raises an error to 
the operating system. This feature can prevent some classes of viruses or worms 
that exploit buffer overrun vulnerabilities and can thus help improve the overall 
security of the system. See the Intel

®

 Architecture Software Developer's Manual 

for more detailed information. Refer to 

http://developer.intel.com/

 for future 

reference on up to date nomenclatures.

• Intel

 64 Architecture — An enhancement to Intel's IA-32 architecture, allowing 

the processor to execute operating systems and applications written to take 
advantage of Intel

®

64. Further details on Intel

®

 64 architecture and programming 

model can be found at 

http://developer.intel.com/technology/intel64/

.

• Intel

 VT) — A set of hardware 

enhancements to Intel server and client platforms that can improve virtualization 
solutions. Intel

®

 VT provides a foundation for widely-deployed virtualization 

solutions and enables a more robust hardware assisted virtualization solution. More 
information can be found at: 

http://www.intel.com/technology/virtualization/