LSI LSI22915A, Руководство пользователя, Страница: 45 / 50

LSI22915A PCI to Dual Channel Ultra160 SCSI Host Adapter User’s Guide A-1
Version 1.3 Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.
Appendix A
Glossary of Terms
and Abbreviations
160/m An industry initiative extension of the Ultra160 SCSI specification that
requires support of Double Transition Clocking, Domain Validation, and
Cyclic Redundancy Check.
AIP Asynchronous Information Protection. Provides error checking for
asynchronous, nondata phases of the SCSI bus.
BIOS Basic Input/Output System. Software that provides basic read/write
capability. Usually kept as firmware (ROM-based). The system BIOS on
the mainboard of a computer boots and controls the system. The SCSI
BIOS on the host adapter acts as an extension of the system BIOS.
Bit A binary digit. The smallest unit of information a computer uses. The
value of a bit (0 or 1) represents a two-way choice, such as on or off,
true or false, and so on.
Bus A collection of unbroken signal lines across which information is
transmitted from one part of a computer system to another. Connections
to the bus are made using taps on the lines.
CISPR A special international committee on radio interference
(Committee, International and Special, for Protection in Radio).
Configuration Refers to the way a computer is set up: the combined hardware
components (computer, monitor, keyboard, and peripheral devices) that
make up a computer system; or the software settings that allow the
hardware components to communicate with each other.
CRC Cyclic Redundancy Check. An error detection code used in Ultra160
SCSI. Four bytes are transferred with the data to increase the reliability
of data transfers. CRC is used on the Double Transition (DT) Data-In and
DT Data-Out phases.