Table 134 Seek Command (7Xh); Seek (7Xh) - Hitachi HDS723020BLA642 Specifications
3.5 inch serial ata hard disk drive
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Also See for HDS723020BLA642:
- Datasheet (2 pages) ,
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- Quick installation manual (3 pages)
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11.36 Seek (7xh)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7
6
5
CRC UNC
0
0
0
0
Table 134 Seek Command (7xh)
The Seek command initiates a seek to the designated track and selects the designated head. The device need
not be formatted for a seek to execute properly.
Output Parameters To The Device
In LBA mode, this register specifies LBA address bits 0 – 7 for seek. (L=1)
Sector Number
Cylinder High/Low
The cylinder number of the seek.
In LBA mode, this register specifies LBA address bits 8 – 15 (Low), 16 – 23 (High)
for seek. (L=1)
H
The head number of the seek.
In LBA mode, this register specifies LBA address bits 24 – 27 for seek. (L=1)
Input Parameters From The Device
In LBA mode, this register contains current LBA bits 0 – 7. (L=1)
Sector Number
In LBA mode, this register contains current LBA bits 8 – 15 (Low), 16 – 23 (High).
Cylinder High/Low
(L=1)
In LBA mode, this register contains current LBA bits 24 – 27. (L=1)
H
7
6
5
4
3
2
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
1
L
1
D
H
H
H
0
1
1
1
-
-
-
4
3
2
1
IDN
0
ABT T0N AMN
V
0
V
0
Hitachi hard disk drive specifications
Command Block Input Registers
0
Register
7
-
Data
-
-
Error
-
Sector Count
-
V
Sector Number
V
V
Cylinder Low
V
V
Cylinder High
V
H
Device/Head
-
-
Status
Status Register
0
7
6
5
BSY RDY
DF
0
0
V
0
192
6
5
4
3
2
1
-
-
-
-
-
-
...See Below...
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
-
-
-
H
H
H
...See Below...
4
3
2
1
DSC DRQ COR IDX
ERR
V
-
0
-
0
-
-
V
V
V
H
0
V
- Quick Links:
- Table 1 Type and Model
- General Features
- Data Sheet
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