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Acronyms
Term
Define
AC'97
Audio CODEC (Coder-Decoder)
Advanced Configuration Power Interface - standard to implement power sav-
ACPI
ing modes in PC-AT systems.
Basic Input Output System - firmware in PC-AT system that is used to initial-
BIOS
ize system components before handing control over to the operating system.
Controller-area network (CAN or CAN-bus) is a vehicle bus standard
CAN
designed to allow micro controllers to communicate with each other within a
vehicle without a host computer.
DDI
Digital Display Interface - containing DisplayPort, HDMI/DVI, and SDVO
Embedded Application Programmable Interface
Software interface for COM Express© specific industrial function
System information
Watchdog timer
EAPI
I2C Bus
Flat panel brightness control
User storage area
GPIO
GbE
Gigabit Ethernet
GPIO
General purpose input output
Intel High Definition Audio (HD Audio) refers to the specification released by
HDA
Intel in 2004 for delivering high definition audio that is capable of playing
back more channels at higher quality than AC'97
Inter Integrated Circuit - 2 wire (clock and data) signaling scheme allowing
I2C
communication between integrated circuit, primarily used to read and load
register values
ME
Management Engine
"Personal Computer - Advanced Technology" - an IBM trademark term used
PC-AT
to refer to Intel based personal computer in 1990s
PEG
PCI Express Graphics
Real Time Clock - battery backed circuit in PC-AT systems that keeps system
RTC
time and date as well as certain system setup parameters
Serial Presence Detect - refers to serial EEPROM on DRAMs that has
SPD
DRAM Module configuration information
Trusted Platform Module, chip to enhance the security features of a computer
TPM
system
UEFI
Unified Extensible Firmware Interface
WDT
Watch Dog Timer
3
SOM-5871 User Manual
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