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Cheetah 15K.3 SCSI Product Manual, Rev. G
9.0
Interface requirements
This section partially describes the interface requirements as implemented on the drives.
9.1
General description
This section describes in essentially general terms the interface requirements supported by the Cheetah 15K.3
SCSI. No attempt is made to describe all of the minute details of conditions and constraints that must be con-
sidered by designers when designing a system in which this family of drives can properly operate. Seagate
declares that the drives operate in accordance with the appropriate ANSI Standards referenced in various
places herein, with exceptions as noted herein or in the Seagate SCSI Interface Product Manual .
9.2
SCSI interface messages supported
Table 5 lists the messages supported by the Cheetah 15K.3 SCSI family drives.
Table 5:
SCSI messages supported by Cheetah 15K.3 SCSI family drives
Message name
Abort
Abort-tag
Bus device reset
Clear ACA
Clear queue
Command complete
Continue I/O process
Disconnect
Extended messages
Identify
Ignore wide residue (two bytes)
Initiate recovery
Initiator detected error
Linked command complete
Linked command complete with flag
Message parity error
Message reject
Modify data pointer
No operation
Parallel Protocol Request
Queue tag messages (two bytes)
ACA
Head of queue tag
Ordered queue tag
Simple queue tag
Quick Arbitration and Selection (QAS)
Release recovery
Restore pointers
Save data pointer
Synchronous data transfer req.
Target transfer disable
Terminate I/O process
Wide data transfer request
Supported by
Message code
Cheetah 15K.3
06h
Y
0Dh
Y
0Ch
Y
16h
N
0Eh
Y
00h
Y
12h
N
04h
Y
01h[1]
Y
80h-FFh
Y
23h
Y
0Fh
N
05h
Y
0Ah
Y
0Bh
Y
09h
Y
07h
Y
[1]
N
08h
Y
[1] [2]
Y
24h
N
21h
Y
22h
Y
20h
Y
55h
Y
10h
N
03h
Y
02h
Y
[1]
Y
13h
N
11h
N
[1]
Y
45
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