Справочник Пользователя для Intel 915GME

Mobile Intel

®

 915GME Express Chipset

April 2007

Development Kit User’s Manual

Order Number: 317230-001US

11

The System Bus is the microprocessor bus of the processor.

The time between the beginning of Setup to Clock (TSU_MIN) 

and the arrival of a valid clock edge. This window may be 

different for each type of bus agent in the system. 

Simultaneous Switching Output (SSO) effects are differences in 

electrical timing parameters and degradation in signal quality 

caused by multiple signal outputs simultaneously switching 

voltage levels in the opposite direction from a single signal or in 

the same direction. These are called odd mode and even mode 

switching, respectively. This simultaneous switching of multiple 

outputs creates higher current swings that may cause additional 

propagation delay (“push-out”) or a decrease in propagation 

delay (“pull-in”). These SSO effects may impact the setup and/

or hold times and are not always taken into account by 

simulations. System timing budgets should include margin for 

SSO effects.

The branch from the bus trunk terminating at the pad of an 

agent.

The main connection, excluding interconnect branches, from 

one end agent pad to the other end agent pad.

The minimum voltage extending below VSS observed for a 

signal at the device pad.

V

CC

 (CPU core) is the core power for the processor. The system 

bus is terminated to V

CC

 (CPU core).

A network that receives a coupled crosstalk signal from another 

network is called the victim network.

The Voltage Regulator Module (a down on the board solution) 

specification for the Intel

®

 Pentium

®

 4 Processor with HT 

Technology processor. It is a DC-DC converter module that 

supplies the required voltage and current to a single processor.

 defines the acronyms used throughout this document.

AC

Audio Codec

ASF

Alert Standard Format

AMC

Audio/Modem Codec.

Anti-Etch

Any plane-split, void or cutout in a VCC or GND plane is referred to as an anti-etch

CMC

Common Mode Choke

CNR

Communications and Networking Riser

EMI

Electro Magnetic Interference

ESD

Electrostatic Discharge

FS

Full-speed. Refers to USB

HS

High-speed. Refers to USB

ICH

I/O Controller Hub

LOM

LAN on Motherboard

LPC

Low Pin Count