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3-104 M3099GX/GH OEM Manual
IDENTIFY (Init → Targ)
The IDENTIFY message(Table 3.86) is sent by either the initiator or
the target establish an I_T_L nexus.
Table 3.86 IDENTIFY message
Bit 7
Identify
6
DiscPriv
5
LUNTAR
0
LUNTRN
3
Reserved
2 14
Reserved
The Identify bit shall be set to one to specify that this is an
IDENTIFY message.
A disconnect privilege (DiscPriv) bit of one indicates that the
initiator has granted the target the privilege of disconnecting. A
DiscPriv bit of zero specifies that the target shall not disconnect. This
bit is not defined and shall be set to zero when an IDENTIFY
message is sent by a target.
A logical unit target (LUNTAR) bit of zero specifies that the I/O
process is directed to or from a logical unit. A LUNTAR bit of one
specifies that the I/O process is directed to or from a target routine.
This scanner supports direction to logical unit, LUNTAR bit is zero,
only.
The logical unit number target routine number (LUNTRN) field
specifies a logical unit number if the LUNTRN bit is zero. The
response to an invalid value in the LUNTRN field is described in
ANSI SCSI-2 7.5.3.
An IDENTIFY message is invalid if a reserved bit is set to one or if
the LUNTAR bit is set to one, this scanner may respond to an
invalid IDENTIFY message by immediately sending a MESSAGE
REJECT message.
An implied RESTORE POINTERS message shall be performed by
the initiator prior to the assertion of the ACK signal for the next
phase for an inbound IDENTIFY message sent during reconnection.
#03.pm5 98.2.22, 1:33 PM104