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Introduction
D15343-003 17
1.2 Terminology
Table 1. Terms and Descriptions
Term Description
AGTL+ Advanced Gunning Transceiver Logic + (AGTL+) bus
BLI Backlight Inverter
Core The internal base logic in the Intel
®
82854 GMCH
CPU Central Processing Unit
CRT Cathode Ray Tube
DBI Dynamic Bus inversion
DBL Display Brightness Link
DDC Display Data Channel (standard created by VESA)
DPMS Display Power Management Signaling (standard created by VESA)
DVI* Digital Visual Interface is the interface specified by the DDWG (Digital Display
Working Group) DVI Spec. Rev. 1.0 utilizing only the Silicon Image developed
TMDS protocol
DVMT Dynamic Video Memory Technology
DVO Digital Video Out
EDID Extended Display Identification Data
EIST Enhanced Intel
®
SpeedStep
®
Technology
FSB Front side bus. Connection between Intel
®
82854 GMCH and the CPU. Also
known as the Host interface
Full Reset A full Intel
®
82854 GMCH Reset is defined in this document when RSTIN# is
asserted
GMCH Refers to the GMCH component. Throughout this datasheet, the Intel
®
82854
Graphics Memory Controller Hub (GMCH) will be referred to as the GMCH.
HD High definition, typically MP@HL for MPEG2; Resolution supported are 720p,
1080i and 1080p
Host This term is used synonymously with processor
Hub Interface (HI) The proprietary interconnect between the Intel
®
82854 GMCH and the ICH4-M
component. In this document, the Hub interface cycles originating from or
destined for the ICH4-M are generally referred to as “Hub interface cycles.” Hub
cycles originating from or destined for the primary PCI interface on are
sometimes referred to as “Hub interface/PCI cycles”
I
2
C Inter-IC (a two wire serial bus created by Philips)
IGD Integrated Graphics Device