Avago Technologies LSI53C320 - Manual (Page 66)

B-2 Glossary
Version 2.2 Copyright © 2003 by LSI Logic Corporation. All rights reserved.
Negation The act of driving a signal to the false state or allowing the cable
terminators to bias the signal to the false state.
Parity A method of checking the accuracy of binary numbers. An extra bit, called
a parity bit, is added to a number. If even parity is used, the sum of all 1s
in the number and its corresponding parity is always even. If odd parity is
used, the sum of the 1s and the parity bit is always odd.
Port A connection into a bus.
Priority The ranking of the devices on the bus during arbitration.
Receiver The circuitry that receives electrical signals on a line.
Reconnect The function that occurs when a target reselects an initiator to continue an
operation after a disconnect.
Reselect A target can disconnect from an initiator in order to perform a time-
consuming function, such as a disk seek. After performing the operation,
the target can “reselect” the initiator.
Target A SCSI device that performs an operation requested by an initiator.
Termination The electrical connection at each end of the SCSI bus, composed of a set
of resistors.
TolerANT A technology developed and used by LSI Logic to improve data integrity,
data transfer rates, and noise immunity through the use of active
negation and input signal filtering.
Ultra320 SCSI A standard for SCSI data transfers. It allows a transfer rate of up to
320 Mbytes/s over a 16-bit SCSI bus. STA (SCSI Trade Association)
supports using the terms “Ultra320 SCSI” over the term “Fast-160.”