IBM DTLA-307075 Hard Drive Specifications - Page 124

Format Track 50h

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12.4 Format Track (50h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count Sector Number 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 Device/Head 1 L 1 D H H H H Command 0 1 0 1 0 0 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number 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 Device/Head - - - - H H H H Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 000V0V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V V V - 0 -V Figure 89. 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 write operation. At this time the sector of data is not verified with read operation whether the sector of data is initialized correctly. 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 LBA address bits 0-7 to be formatted. (L=1) Cylinder High/Low The cylinder number of the track to be formatted. (L=0) In LBA mode this register specifies LBA address bits 8-15 (Low), 16-23 (High) to be formatted. (L=1) H The head number of the track to be formatted. (L=0) In LBA mode this register specifies LBA address bits 24-27 to be formatted. (L=1) Deskstar 40GV & 75GXP hard disk drive specifications 112

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12.4 Format Track (50h)
see below
Status
0 1 0 1 0 0 0 0
Command
- - - - H H H H
Device/Head
1 L 1 D H H H H
Device/Head
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
Cylinder Low
V V V V V V V V
Cylinder Low
V V V V V V V V
Sector Number
V V V V V V V V
Sector Number
- - - - - - - -
Sector Count
- - - - - - - -
Sector Count
see below
Error
- - - - - - - -
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input
Registers
Command Block Output
Registers
V
–
0
–
V
V
V
0
0
0
V
0
V
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 89. 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 write operation. At this time the sector of data is not verified with read
operation whether the sector of data is initialized correctly. 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 in-
ternally, the device will always format a track in the same way no matter what sector numbering is speci-
fied in the format table.
Output parameters to the device
Sector Number
In LBA mode this register specifies LBA address bits 0-7 to be formatted. (L=1)
Cylinder High/Low
The cylinder number of the track to be formatted. (L=0)
In LBA mode this register specifies LBA address bits 8-15 (Low), 16-23 (High) to
be formatted. (L=1)
H
The head number of the track to be formatted. (L=0)
In LBA mode this register specifies LBA address bits 24-27 to be formatted.
(L=1)
Deskstar 40GV & 75GXP hard disk drive specifications
112