Advantech SOM-DB5920 A1 User Manual page 7

Safety Precaution - Static Electricity
Follow these simple precautions to protect yourself from harm and the products from
damage.
To avoid electrical shock, always disconnect the power from the PC chassis

before manual handling. Do not touch any components on the CPU card or
other cards while the PC is powered on.
Disconnect the power before making any configuration changes. A sudden rush

of power after connecting a jumper or installing a card may damage sensitive
electronic components.
Acronyms
Term Define
AC'97 Audio CODEC (Coder-Decoder)
Advanced Configuration Power Interface – standard to implement power saving
ACPI
modes in PC-AT systems
Basic Input Output System – firmware in PC-AT system that is used to initialize
BIOS
system components before handing control over to the operating system
Controller-area network (CAN or CAN-bus) is a vehicle bus standard designed
CAN to allow microcontrollers to communicate with each other within a vehicle with-
out a host computer
DDI Digital Display Interface – containing DisplayPort, HDMI/DVI, and SDVO
Embedded Application Programmable Interface
Software interface for COM Express
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EAPI
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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 reg-
ister values
ME Management Engine
"Personal Computer – Advanced Technology" – an IBM trademark term used to
PC-AT
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 DRAM
SPD
Module configuration information
Trusted Platform Module, chip to enhance the security features of a computer
TPM
system
UEFI Unified Extensible Firmware Interface
WDT Watchdog Timer
System information
Watchdog timer
I2C Bus
Flat panel brightness control
User storage area
GPIO
vii
®
specific industrial function
SOM-DB5920 User Manual