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Glossary
CCITT
International Telephone and Telegraph Consultative Committee. The
international standards body for telecommunications.
CCS (Command Control Set)
A standard set of SCSI commands used to communicate with SCSI
devices.
CDB (Command Descriptor Block)
A block of communication passed from the SCSI host to the SCSI target
that provides all control information the target needs to carry out a
command.
CPU (Central Processing Unit)
A personal computer's main microprocessor chip.
decode
The act of recovering the original information from an encoded signal.
G
differential
L
Refers to the electrical configuration of the signals used on the SCSI bus.
O
A set of two conductors are used to maintain a positive (+) and a negative
S
(-) polarity. This technique allows SCSI devices to communicate over
S
longer distances with minimum interference.
A
R
disconnect
Y
The function used by a SCSI target to remove itself from the SCSI bus and
release the control of the bus to other users.
DMA (Direct Memory Access)
A fast method of moving data between two processor subsystems without
processor intervention.
GL-2
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