LSI LSI20160, User Manual

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LSI20160 Single Channel Ultra160 SCSI to PCI Host Adapter A-1
Copyright © 2001 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 (CRC).
Active
Termination The electrical connection required at each end of the SCSI bus,
composed of active voltage regulation and a set of termination resistors.
Ultra, Ultra2, and Ultra160 SCSI require active termination.
Address A specific location in memory, designated either numerically or by a
symbolic name.
AIP Asynchronous Information Protection provides error checking for
asynchronous, nondata phases of the SCSI bus.
Asynchronous
Data Transfer One of the ways data is transferred over the SCSI bus. It is slower than
synchronous data transfer.
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 is used to boot and control the system. The
SCSI BIOS on your 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.