Table 58.Format Track Command (50H); Format Track (50H) - Hitachi 7K250 - Deskstar - Hard Drive Specifications

12.6 Format Track (50h)

Table 59: Format Track command (50h)
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
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
Cylinder High/Low This indicates the cylinder number of the track to be formatted. (L = 0)
H
Input parameters from the device
Sector Number
Cylinder High/Low In LBA mode this register specifies the current LBA address bits as 8–15 (Low) and bits
H
Error
In LBA mode this command formats a single logical track including the specified BLA.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - -
- - - - - - - -
V V V 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 H
0 1 0 1 0 0 0 0
4 3 2 1
IDN 0 ABT T0N AMN
V 0 V 0
In LBA mode this register specifies that LBA address bits 0–7 are to be formatted. (L=1).
In LBA mode this register specifies that LBA address bits 8–15 (Low) and bits 16–23
(High) are to be formatted. (L = 1)
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)
In LBA mode this register specifies the current LBA address bits as 0–7 (L = 1).
16–23 (High).
In LBA mode this register specifies the current LBA address bits as 24–27 (L=1).
The Error Register. An Abort error (ABT=1) will be returned when LBA is out of range
Deskstar 7K250 Hard Disk Drive Specification
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
0 7 6
BSY RDY DF DSC DRQ
0 0 V
117
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
- - - - H H H H
see below
Status Register
5 4 3 2
COR IDX
0 V - 0
1 0
ERR
- V