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Abbreviations

Standard units of measure used in this developer note include:

A

amperes

MB

megabytes

dB

decibels

Mbps

megabits per second

GB

gigabytes

Mbit

megabits

GHz

gigahertz

MHz

megahertz

Hz

hertz

mm

millimeters

KB

kilobytes

ns

nanoseconds

kg

kilograms

V

volts

kHz

kilohertz

VDC

volts direct current

mA

milliamperes

Other abbreviations used in this note include:

$n

hexadecimal value n

10Base-T

an Ethernet standard for data transmission at 10 Mbits per second

100Base-TX

an Ethernet standard for data transmission at 100 Mbits per second

A/D

analog to digital

ADB

Apple Desktop Bus

AGP

accelerated graphics port

AIM

ATA Interface Module

ANSI

American National Standards Institute

API

application programming interface

ATA

Advanced Technology Attachment

ATAPI

ATA Packet Interface

BIOS

basic input/output system

CAS

column address strobe

CD

compact disc

CD-R

compact disc-recordable

CD-ROM

compact disc read-only memory

CD-RW

compact disc-rewrittable

CPU

central processing unit

CRM

Communications Resource Manager

D/A

digital to analog

DAA

data access adapter

DBDMA

descriptor-based direct memory access

DIMM

Dual Inline Memory Module

DMA

direct memory access

DDR

double data rate, a type of SDRAM

DSSS

direct-sequence spread-spectrum

DV

digital video

DVD

digital video disc

DVD-R

digital video disc-recordable

DVD-ROM

digital video disc read-only memory

DVD-RW

digital video disc-rewrittable

EDO

extended data out

EEPROM

electrically eraseable programmable ROM

G3

Generation 3, the third generation of PowerPC microprocessors

G4

Generation 4, the fourth generation of PowerPC microprocessors

GART

graphics address remapping table

GND

ground

HFS

hierarchical file system

HID

human interface device, a class of USB devices

IC

integrated circuit

IDE

integrated device electronics

IEC

International Electrotechnical Commission

I/O

input and output

IR

infrared

ISO

International Organization for Standardization

JEDEC

Joint Electron Device Engineering Council

L1

level 1 or first level

L2

level 2 or second level

LAN

local area network

LED

light emitting diode

MAC

media access controller

Mac OS

Macintosh Operating System

MPEG

Motion Picture Experts Group

modem

modulator-demodulator

NMI

nonmaskable interrupt

NV-RAM

nonvolatile random-access memory

OHCI

Open Host Controller Interface

OS

operating system

PCI

Peripheral Component Interconnect

PLL

phase-locked loop

POST

power-on self test

RADIUS

Remote Authentication Dial-In User Service

RAM

random-access memory

RCA

Radio Corporation of America

rms

root mean square

ROM

read-only memory

RTAS

run-time abstraction services

SCC

Serial Communications Controller

SCSI

Small Computer System Interface

SDRAM

synchronous dynamic RAM

SGRAM

synchronous graphics RAM

SNR

signal to noise ratio

SPD

Serial Presence Detect

THD

total harmonic distortion

THD+N

total harmonic distortion plus noise

USB

Universal Serial Bus

VCC

positive supply voltage (voltage for collectors)

VIA

versatile interface adapter

Wi-Fi

Logo used by the Wireless Ethernet Compatibility Alliance for certification of interoperability of 802.11 products



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© 2003 Apple Computer, Inc. All Rights Reserved. (Last updated: 2003-05-09)


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