Quantum Instruments DLT 7000 - Manual (Page 83)

SCSI Description
Quantum DLT 7000 Tape System 3-19
Table 3–5 Information Transfer Phases
MSG
Signal
C/D I/O Phase Name Direction of Transfer/ Definition
0 0 0 DATA OUT Initiator to drive.
Allows the drive to request that data be sent from
the initiator to the drive.
0 0 1 DATA IN Drive to initiator.
Allows the drive to send data to the initiator.
0 1 0 COMMAND Initiator to drive.
Allows the drive to request a command from the
initiator.
0 1 1 STATUS Drive to initiator.
Allows the drive to send status information be sent
from the drive to the initiator.
1 1 0 MESSAGE OUT Initiator to drive.
Allows the drive to request that message(s) be sent
from the initiator to the drive; the drive invokes
this phase in response to the attention condition
created by the initiator.
The drive handshakes byte(s) until the ATN signal
is negated, except when rejecting a message.
See 3.5.5.4 Message Out-Additional Conditions.
1 1 1 MESSAGE IN Drive to initiator.
Allows the drive to send message(s) to the
initiator.