Term
Definition
IrDA
Infrared Data Association-a nonprofit organization whose goal is to develop globally adopted specifications for
infrared wireless communication
ISR
Interrupt Service Routine
JTAG
JTAG (IEEE Standard 1149.1) A standard specifying how to control and monitor the pins of compliant devices
on a printed circuit board
Kill
Abort a memory access
KPP
KeyPad Port-16-bit peripheral used as a keypad matrix interface or as general purpose input/output (I/O)
line
Refers to a unit of information in the cache that is associated with a tag
LRU
Least Recently Used-a policy for line replacement in the cache
MMU
Memory Management Unit-a component responsible for memory protection and address translation
MPEG
Moving Picture Experts Group-an ISO committee that generates standards for digital video compression and
audio. It is also the name of the algorithms used to compress moving pictures and video
MPEG
standards
Several standards of compression for moving pictures and video:
• MPEG-1 is optimized for CD-ROM and is the basis for MP3
• MPEG-2 is defined for broadcast video in applications such as digital television set-top boxes and DVD
• MPEG-3 was merged into MPEG-2
• MPEG-4 is a standard for low-bandwidth video telephony and multimedia on the World-Wide Web
MQSPI
Multiple Queue Serial Peripheral Interface-used to perform serial programming operations necessary to
configure radio subsystems and selected peripherals
MSHC
Memory Stick Host Controller
NAND Flash Flash ROM technology-NAND Flash architecture is one of two flash technologies (the other being NOR) used
in memory cards such as the Compact Flash cards. NAND is best suited to flash devices requiring high
capacity data storage. NAND flash devices offer storage space up to 512-Mbyte and offers faster erase, write,
and read capabilities over NOR architecture
NOR Flash
See NAND Flash
PCMCIA
Personal Computer Memory Card International Association-a multi-company organization that has developed
a standard for small, credit card-sized devices, called PC Cards. There are three types of PCMCIA cards that
have the same rectangular size (85.6 by 54 millimeters), but different widths
physical
address
The address by which the memory in the system is physically accessed
PLL
Phase Locked Loop-an electronic circuit controlling an oscillator so that it maintains a constant phase angle (a
lock) on the frequency of an input, or reference, signal
RAM
Random Access Memory
RAM path
Path within ROM bootstrap leading to the downloading and the execution of a RAM application
RGB
The RGB color model is based on the additive model in which Red, Green, and Blue light are combined to
create other colors. The abbreviation RGB comes from the three primary colors in additive light models
RGBA
RGBA color space stands for Red Green Blue Alpha. The alpha channel is the transparency channel, and is
unique to this color space. RGBA, like RGB, is an additive color space, so the more of a color placed, the
lighter the picture gets. PNG is the best known image format that uses the RGBA color space
RNGA
Random Number Generator Accelerator-a security hardware module that produces 32-bit pseudo random
numbers as part of the security module
ROM
Read Only Memory
ROM
bootstrap
Internal boot code encompassing the main boot flow as well as exception vectors
RTIC
Real-Time Integrity Checker-a security hardware module
SCC
SeCurity Controller-a security hardware module
Table continues on the next page...
Chapter 1 About This Book
i.MX 6Solo/6DualLite Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
Freescale Semiconductor, Inc.
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