User Guide

Hardware Functional Overview
FIC A440 Series Service Manual 4-41
ACPI - Advanced Configuration and Power Management Interface.
Clock Throttling - VT82C686A function that allows the CPU clock to be stopped and started at a known duty cycle
using the STPCLK# pin to enter and exit Stop Grant mode. Clock throttling is used for power savings, thermal
management, and reducing the processing speed.
GPI - General Purpose Input.
GPO - General Purpose Output.
Lid Switch - A switch that indicates the notebook LCD Panel has been closed or not.
North Bridge - The CPU to PCI interface, also contains the memory and cache controllers.
South Bridge - The PCI to ISA interface, also contains many legacy devices.
SMM - System Management Mode, Mode of operation while an SMI is active.
SMI - System Management Interrupt. Non-maskable interrupt that causes the system to enter SMM. SMM functions
includes power management, USB legacy keyboard control, security, hot keys, and thermal monitoring.
SMB - System Management Bus. It is used for managing smart batteries, reading SDRAM configuration information,
and other miscellaneous system functions.
TBD
-
To Be Discussed. It means that the specification is not final
yet and should
be discussed with related groups.
4.11 Definitions of Terms