Reference Guide

Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide 195
Table 110 Parallel SCSI —
SPI Report Transfer
Capabilities Mode Subpage —
Field Descriptions
Field Description
PS Parameters Savable. Always set to 0.
SPF SubPage format. Always set to 1. Indicates that this pages uses the sub_page
mode format.
Page Code Identifies the type of
MODE SENSE page being transferred. A value of 19h
identifies this as the Port Control Page.
Subpage Code Identifies the type of
MODE SENSE subpage being transferred. A value of
04h identifies this is as the SPI Report Transfer Capabilities Mode Subpage.
Page Length Indicates the number of bytes in the page, excluding the 4 bytes that make
up the header.
Protocol Identifier A value of 1h indicates that this mode page applies to an SPI-5 compliant
port (see the SCSI Parallel Interface – 5 (SPI–5) standard).
Minimum Transfer
Period Factor
Indicates the minimum Transfer Period Factor supported.
Maximum REQ/ACK
Offset
Indicates the maximum REQ/ACK supported.
Maximum Transfer
Width Exponent
Indicates the maximum Transfer Width Exponent supported.
Protocol Options Bits
Supported
Indicates the Supported Protocol Option Bits.