User manual MAXTOR ST5660N
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MAXTOR ST5660N INSTALLATION (195 ko)
Manual abstract: user guide MAXTOR ST5660N
Detailed instructions for use are in the User's Guide.
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Decathlon Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SCSI Interface Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Decathlon Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SCSI Interface Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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© 1994 Seagate Technology, Inc. [. . . ] Bytes 03 47 Bytes 03 Bits 7 6 5 4 3 2 1 0 Logical block address Block length (00000200H) The logical block address is determined by the PMI bit in the CDB of the Read Capacity command. The block length is always 512.
Bytes 47
3. 5. 2
Read Extended command (28H)
When the drive receives the Read Extended command, it transfers data to the initiator. This command is the same as the Read command discussed in Section 3. 4. 6, except that in the CDB for the Read Extended command, a 4-byte logical block address and a 2-byte transfer length can be specified. If there is a reservation access conflict, this command terminates with a reservation conflict status and no data is read. For more information about the reservation conflict status, see Section 3. 2. Bytes 0 1 25 6 78 9 Byte 1 0 0 0 0 0 Bits 7 0 6 0 LUN 0 5 1 4 0 DPO 0 0 3 1 FUA 0 0 2 0 0 0 0 1 0 0 0 Flag 0 0 Rel Adr 0 Link
Logical block address Transfer length
If the disable page out (DPO) bit is one, the cached data that the drive receives during this command has the lowest priority for being retained in the cache. If the DPO is zero, the cached data has the highest priority for being retained in the cache.
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Decathlon Family Product Manual, Rev. B
If the forced unit access (FUA) bit is one, the drive must access the disc to get the data requested by the initiator, even if the data is available in the cache. If the FUA bit is zero, the drive can get the data from the cache or the disc. If the RelAdr bit is zero, the logical block address field specifies the first logical block of the range of logical blocks to be written and verified by the drive. If the RelAdr bit is one, the logical block address field is a two's complement displacement. This displacement is added to the logical block address last accessed on the drive to determine the logical block address for this command. Bytes 25 Bytes 78 The logical block address specifies the logical block where the read operation begins. The transfer length specifies the number of contiguous logical blocks of data to be transferred. A transfer length of 0 means that no logical blocks are to be transferred. Any other value indicates the number of logical blocks to be transferred.
3. 5. 3
Write Extended command (2AH)
When the drive receives the Write Extended command, the drive writes the data from the initiator to the disc. This command is like the Write command, except that the CDB for this command contains a 4-byte logical block address and a 2-byte transfer length. If there is a reservation access conflict, this command terminates with a reservation conflict status and no data is written. For more information about the reservation conflict status, see Section 3. 2.
Decathlon Family Product Manual, Rev. B Bits 7 0 6 0 LUN 0 0 0 0 0 0 5 1 4 0 DPO 0 0 3 1 FUA 0 0 2 0 0 0 0 1 1 0 0 Flag 0 0
59
Bytes 0 1 25 6 78 9 Byte 1
Rel Adr 0 Link
Logical block address Transfer length
If the disable page out (DPO) bit is one, the cached data that the drive receives during this command has the lowest priority for being retained in the cache. If the DPO is zero, the cached data has the highest priority for being retained in the cache. If the forced unit access (FUA) bit is one, the drive must access the disc to write the data sent by the initiator, even if the data can be stored in the cache. [. . . ] Last command byte to data in
Description Command to data in or parameter in
Symbol T06
Typical
Max
Command-dependent
122
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
Decathlon Family Product Manual, Rev. B
DB(07, P)
Last byte
First byte
ATN
SEL
BUSY
I/O
MSG
C/D
REQ
ACK
T07, T08
Figure 18. Last command byte to data out
Description Command to data out or parameter out Command to data (write to data buffer)
Symbol T07 T08
Typical
Max
Command-dependent <500 µsec 1, 025 µsec
Decathlon Family Product Manual, Rev. B
0 1 0 1 0 1 0 1 0 1 0
123
DB(07, P)
Identify message
First byte
ATN
SEL
BUSY
I/O
MSG
1 0 1 0 1 0 1
C/D
REQ
ACK
T16
Figure 19. [. . . ]
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