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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.