Seek Command (0Bh) - Seagate Ultra160 Product Manual

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8.45

SEEK command (0Bh)

The SEEK command (Table 230) requests that the drive seek to the specified LOGICAL BLOCK ADDRESS.
For systems which support disconnection, the drive disconnects when a valid SEEK command is received. The
use of this command is infrequent since all commands involving data transfer to/from the drive media contain
implied seek addresses.
Table 230: SEEK command (0Bh)
Bit 7
Byte
0 0
0
1
LOGICAL UNIT NUMBER [1]
2 LOGICAL BLOCK ADDRESS
3 LOGICAL BLOCK ADDRESS (LSB)
4 0
5 CONTROL [3]
[1] The LOGICAL UNIT NUMBER must be zero.
[2] The maximum LOGICAL BLOCK ADDRESS that may be specified for a SEEK command is defined in
READ CAPACITY Data, Section 8.24.
[3] See Table 61, "CONTROL field," in Section 7.2.1.
6 5
0 0
0 0
0 0
SCSI Interface Product Manual, Rev. B
4 3
0 1
LOGICAL BLOCK ADDRESS (MSB) [2]
0 0
2 1
0 1
0 0
0
1
0