Reference Guide

Chapter 4 SCSI Commands
MODE SELECT (6) / (10) Command (15h / 55h)
DLT-S4 Interface Reference Guide 112
Table 69 SAS — Disconnect /
Reconnect MODE SELECT
Page — Field Descriptions
Field Description
PS Parameters Savable. For
MODE SELECT, must be set to 0.
SPF SubPage Format. Always set to 0. Indicates that this page uses the page_0 page
format.
Page Code Identifies the type of
MODE SELECT page being transferred. A value of 02h identifies
this as the Disconnect / Reconnect Page.
Page Length Indicates the number of bytes in the page, excluding bytes 0 and 1. The length is
returned in
MODE SENSE commands and must subsequently be set to the same value
when performing
MODE SELECT.
Bus Inactivity
Time Limit
Indicates the maximum period the tape drive is permitted to maintain a connection
without transferring a frame. This value is specified in 100us increments. Must be set
to 1.
Maximum
Connect Time
Limit
Indicates the maximum duration of a connection. This value is specified in 100us
increments. Must be set to A0h.
Maximum Burst
Size
Indicates the maximum amount of data that will be transferred without
disconnecting, in units of 512 bytes. The default value is 80h for 64 KBytes.
First Burst Size Must be set to 0.