Deskstar T7K250 Hard Disk Drive Specification
125
12.6 Format Track (50h)
Table 70: Format Track command (50h)
The Format Track command formats a single logical track on the device. Each good sector of data on the track will
be initialized to zero with the write operation. At this time, the read operation does not verify the correct initializa-
tion of the data sector. Any data previously stored on the track will be lost.
The host may transfer a sector of data containing a format table to the device. But the device ignores the format
table and writes zero to all sectors on the track regardless of the descriptors.
Since device performance is optimal at 1:1 interleave and the device uses relative block addressing internally, the
device will always format a track in the same way no matter what sector numbering is specified in the format table.
Output parameters to the device
Sector Number
In LBA mode this register specifies that LBA address bits 0–7 are to be formatted. (L=1).
Cylinder High/Low
This indicates the cylinder number of the track to be formatted. (L = 0)
In LBA mode this register specifies that LBA address bits 8–15 (Low) and bits 16–23
(High) are to be formatted. (L = 1)
H
This indicates the head number of the track to be formatted (L = 0). In LBA mode this reg-
ister specifies that LBA address bits 24–27 are to be formatted. (L= 1)
Input parameters from the device
Sector Number
In LBA mode this register specifies the current LBA address bits as 0–7 (L = 1).
Cylinder High/Low
In LBA mode this register specifies the current LBA address bits as 8–15 (Low) and bits
16–23 (High).
H
In LBA mode this register specifies the current LBA address bits as 24–27 (L=1).
Error
The Error Register. An Abort error (ABT=1) will be returned when LBA is out of range
In LBA mode this command formats a single logical track including the specified BLA.
Command Block Output Registers
Command Block Input Registers
Register
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Data
- - - - - - - -
Data
- - - - - - - -
Feature
- - - - - - -
Error
see below
Sector Count
- - - - - - - -
Sector Count
- - - - - - - -
Sector Number
V V V V V V V V
Sector Number
V V V V V V V V
Cylinder Low
V V V V V V V V
Cylinder Low
V V V V V V V V
Cylinder High
V V V V V V V V
Cylinder High
V V V V V V V V
Device/Head
1 L 1 D H H H H
Device/Head
- - - - H H H H
Command
0 1 0 1 0 0 0 0
Status
see below
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC
UNC
0
IDN
0
ABT
T0N
AMN
BSY RDY
DF
DSC
DRQ
COR IDX
ERR
0
0
0
V
0
V
0
0
0
V
0
V
-
0
-
V
Summary of Contents for HDT722516DLA380
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