SCSI Description
5–70 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
MODE SELECT (6) Command (15h) (continued)
Table 5–34 Disconnect–Reconnect Page — Field Descriptions (continued)
Default
Field Value Description
DTDC Data Transfer Disconnect Control. This field of three bits defines
further restrictions when a disconnect is permitted. These are as
follows:
Value Description
000b Data transfer disconnect control is not used. Disconnect is
controlled by other fields in this page.
001b A target shall not attempt to disconnect once the data
transfer of a command has started until all data of the
command has been transferred. The connect time limit
and bus inactivity limit are ignored during the transfer.
010b Reserved
011b A target shall not attempt to disconnect once the data
transfer of a command has started, until the command is
complete. The connect time limit and bus inactivity limit
are ignored once the transfer has started.
First Burst Size 0 This field indicates the maximum amount of data that a target may
transfer for a command during the same interconnect in which it
receieves the command.
NOTE: Fully supported and temporary fields are underlined. Unsupported fields are not
underlined. The PS bit is underlined, meaning it will be set on a MODE SENSE command,
since the page is savable.
