Fujitsu MAG3182LC Manual Do Utilizador

C141-E064-03EN

5 - 9

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.

Bus width

CN2 13-14

16 bit bus

Open *

8 bit bus

Short

*  Set at factory shipment

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.

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)