13.27 Seek (7xh)
see belowStatus0 1 1 1 - - - -Command
- - - - H H H HDevice/Head1 L 1 D H H H HDevice/Head
V V V V V V V VCylinder HighV V V V V V V VCylinder High
V V V V V V V VCylinder LowV V V V V V V VCylinder Low
V V V V V V V VSector NumberV V V V V V V VSector Number
- - - - - - - -Sector Count- - - - - - - -Sector Count
see belowError- - - - - - - -Feature
- - - - - - - -Data- - - - - - - -Data
7 6 5 4 3 2 1 0Register7 6 5 4 3 2 1 0Register
Command Block Input RegistersCommand Block Output Registers
V-0-V0V000V0V000
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
Status RegisterError Register
Figure 110. Seek command (7xh)
The Seek command initiates a seek to the designated track and selects the designated head. The device
does not need to be formatted for a seek to execute properly.
Output Parameters To The Device
Sector Number In LBA mode this register specifies the LBA address bits 0–7 for seek. (L = 1)
Cylinder High/Low This is the cylinder number of the seek.
In LBA mode this register specifies the LBA address bits 8–15 (Low) and bits
16–23 (High) for seek. (L = 1)
H This indicates the head number of the seek.
In LBA mode this register specifies the LBA address bits 24–27 for seek. (L = 1)
Input Parameters From The Device
Sector Number In LBA mode this register contains the current LBA bits 0–7. (L = 1)
Cylinder High/Low In LBA mode this register contains the current LBA bits 8–15 (Low) and bits
16–23 (High). (L = 1)
H In LBA mode this register contains the current LBA bits 24–27. (L = 1)
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
161
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