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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
Hz hertz MHz megahertz
KB kilobytes mm millimeters
kg kilograms ns nanoseconds
kHz kilohertz V volts
mA milliamperes VDC volts direct current

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
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-ROM compact disc read-only memory
CPU central processing unit
CRM Communications Resource Manager
DAA data access adapter
DBDMA descriptor-based direct memory access
DIMM Dual Inline Memory Module
DMA direct memory access
DV digital video
EDO extended data out
EEPROM electrically eraseable programmable ROM
G3 Generation 3, the third generation of PowerPC
microprocessors, including the PPC 740 and PPC 750
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
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
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
USB Universal Serial Bus
VCC positive supply voltage (voltage for collectors)
VIA versatile interface adapter


© 1999 Apple Computer, Inc. – (Last Updated 26 Oct 99)

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