Fujitsu MAG3182LC, MAF3364LP 5 Setting of the SCSI interface operation mode CN2, Mode settings

Table 5.5 Setting of the SCSI interface operation mode (CN2)

Operation mode	CN2 15-16
Follows the DIFFSNS signal level on the SCSI bus	Open *
Single-Ended mode	Short

*Set at factory shipment

(5)Setting the bus width of the SCSI interface (CN2)

By establishing a short-circuit between the 13 and 14 CN2 setting terminals, the bus width for the SCSI interface is forcibly set to the 8-bit bus mode. This setup terminal must be set in order to guarantee the physical level of the SCSI interface’s upper bus (DB8-15, P1) inside the IDD only when the top-level bus (DB8-15, P1) for the IDD SCSI interface is not connected to the external part of the IDD.

Table 5.6 Setting the bus width of the SCSI interface (CN2)

Bus width	CN2 13-14
16 bit bus	Open *
8 bit bus	Short

* Set at factory shipment

5.3.3Mode settings

In addition to the previously described settings using setting terminals, the IDD is provided with several mode settings. The mode settings are enabled by specifying the CHANGE DEFINITION command. Table 5.7 lists the mode settings and their settings at factory shipment.

Refer to Section 3.1.4 of the SCSI Logical Interface Specifications for details of the command.

Table 5.7 Default mode settings (by CHANGE DEFINITION command)

Mode setting	Contents
SCSI level	SCSI-2
SYNCHRONOUS DATA TRANSFER REQUEST message sending	Sent from IDD
UNIT ATTENTION report mode	Reported
Reselection retry count	Not restricted
WIDE DATA TRANSFER REQUEST message sending	Sent from IDD
Reselection time-out delay	250 ms
Spindle motor start delay time	0 sec (LP/MP)
	12 sec × SCSI ID (LC/MC)

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