3
SOM-3569 User Manual
Chapter 1
G
eneral
Information
Acronyms
Term
Define
AC’97
Audio CODEC (Coder-Decoder)
ACPI
Advanced Configuration Power Interface – standard to implement power saving
modes in PC-AT systems
BIOS
Basic Input Output System – firmware in PC-AT system that is used to initialize
system components before handing control over to the operating system
CAN
Controller-area network (CAN or CAN-bus) is a vehicle bus standard designed
to allow micro controllers to communicate with each other within a vehicle with-
out a host computer
DDI
Digital Display Interface – containing DisplayPort, HDMI/DVI, and SDVO
EAPI
Embedded Application Programmable Interface
Software interface for COM Express® specific industrial function
System information
Watchdog timer
I2C Bus
Flat Panel brightness control
User storage area
GPIO
GbE
Gigabit Ethernet
HDA
Intel High Definition Audio (HD Audio) refers to the specification released by
Intel in 2004 for delivering high definition audio that is capable of playing back
more channels at higher quality than AC’97
I2C
Inter Integrated Circuit – 2 wire (clock and data) signaling scheme allowing
communication between integrated circuit, primarily used to read and load reg-
ister values
ME
Management Engine
PC-AT
“Personal Computer – Advanced Technology” – an IBM trademark term used to
refer to Intel based personal computer in 1990s
PEG
PCI Express Graphics
RTC
Real Time Clock – battery backed circuit in PC-AT systems that keeps system
time and date as well as certain system setup parameters
SPD
Serial Presence Detect – refers to serial EEPROM on DRAMs that has DRAM
Module configuration information
TPM
Trusted Platform Module – chip to enhance the security features of a computer
system
UEFI
Unified Extensible Firmware Interface
WDT
Watch Dog Timer
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