Quantum DLT 7000 Manuel télécharger pdf (Page 83)

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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.

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 311 312

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Quantum DLT 7000 Manuel Page 83

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