Intel E7-2803 AT80615006438AB User Manual

10

Datasheet Volume 2 of 2 

IOH

Input/Output Hub. An Intel

®

 QuickPath Interconnect agent that handles IO 

requests for processors.

IPI

Inter-processor interrupt

L1 Cache

First-level cache

L2 Cache

Second-level cache

LLC

Last Level Cache

LVT

Local Vector Table

Mapper

Address mapper in memory controller is a combinational function which 

translates the coherency controller address (Local address) into DIMM specific 

row, column, bank addresses.

MC

Machine Check

MCA

Machine Check Architecture

NB

North Bound

NBSP

Node Boot Strap Processor (Core). A core within a CPU that is responsible to 

execute code to initialize the CPU.

Node Controller

Chipset component that enables hierarchical scaling of computing segments by 

abstracting them and acting as proxy to those computing segments to build 

scalable multi-processor systems. 

NodeID

5-bit address field located with in an Intel QuickPath Interconnect packet. Intel 

QuickPath Interconnect agents can be uniquely identified through NodeIDs.

NUMA

Non Uniform Memory Access

Parity

Even parity (even number of ones in data).

PBox

Port Physical Interface

PIC

Programmable Interrupt Controller

PLL 

Phase Locked Loop

RAS

Row Address Select / Reliability Accessibility Serviceability

RBox

Crossbar Router

RTA

Router Table Array

SB

Southbound

SBox

Caching Agent or System Interface Controller

SCMD

Sub command

SECDED

Single Error Correction Double Error Detection

SMBus

System Management Bus. Mastered by a system management controller to read 

and write configuration registers. Limited to 100 KHz.

SMM

System Management Mode

Socket

Processor, CPU (cores + uncore)

SPCL

Special 

SPI 

Serial Peripheral Interface

SSP

System Service Processor

TLB

Translational Lookaside Buffer, present in each core, handles linear to physical 

address mapping.

TOCM

Top of Intel QuickPath Interconnect Physical Memory

UBox

Configuration Agent or System utilities/management controller.

UI

Unit Interval, Average time interval between voltage transition of the signals.

Uncore

System interface logic

VLW

Virtual Legacy Wire