BIOS BIOS UPDATE UTILITY
2-17
DMA Direct Memory Access.
DMI Direct Media Interface – connection from the processor to the PCH.
DRAM Dynamic Random Access Memory, memory chips from which DIMMs are constructed.
DXE
Driver Execution Environment. Component of Intel® Platform Innovation Framework for
EFI architecture.
ECC
Error Correction Code. Refers to a memory system that has extra bit(s) to support limited
detection/correction of memory errors.
EEPROM Electrically Erasable Programmable Read Only Memory – called “Flash memory”.
EFI Extensible Firmware Interface (see also UEFI).
EHCI Enhanced Host Controller Interface, a USB controller standard.
Flash Short for “Flash Memory”, solid-state memory based on EEPROMs.
FRU Field Replaceable Unit.
FV Firmware Volume.
GbE Gigabit Ethernet, an Ethernet connection operating at gigabit/second speed.
GUID Globally Unique Identifier.
HotKey
A “HotKey” is a key combination recognized as an unprompted command input. For
example, pressing <F2> during POST will take the operator to the Setup Utility.
HT Intel® Hyper-Threading Technology.
IBMC Integrated Baseboard Management Controller.
ICH I/O Control Hub, a chipset component.
IDE Integrated Drive Electronics, a disk interface standard.
IIO Integrated I/O – I/O controller integrated into the processor chip.
IMC Integrated Memory Controller – memory controller integrated into the processor chip.
INTR Interrupt Request.
I/O Input/Output.
IPMI
Intelligent Platform Management Interface – an industry standard that defines standard-
ized, abstracted interfaces to platform management hardware.
IRQ Interrupt Request.
KVM
Keyboard, Video, and Mouse – an attachment that mimics those devices, and connects
them to a remote I/O user.
LAN Local Area Network.
LED Light Emitting Diode.
LRDIMM
Load Reduced DIMM memory modules have buffer registers for both address and data
between the SDRAM modules and the system's memory controller.
MCA Machine Check Architecture.
MCE Machine Check Exception.
MMIO Memory Mapped I/O.
MRC Memory Reference Code.
Table 10: Terminology (Continued)
Term Description