IBM DJSA-210 Hard Drive Specifications - Page 125

Format Track 50h: vendor specific, Output Parameters To The Device, Sector Number, Cylinder High/Low

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13.5 Format Track (50h: vendor specific) 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 7 6 5 4 3 210 CRC UNC 0 IDN 0 ABT T0N AMN 0 0 0 V 0 V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V V V - 0 -V Figure 75. 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 is not verified for the correct sector of data initialization. Any data previously stored on the track will be lost. The host transfers a sector of data containing a format table to the device. The format table should contain two bytes for each sector on the track to be formatted. The structure of the format table is shown in Figure 75 on page 112. The first byte should contain a descriptor value and the second byte should contain the sector number. The descriptor value should be 0 for a good sector. Any other descriptor value will cause an aborted error. The remaining bytes of the sector following the format table are ignored. Since device performance is optimal at a 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 NumberIn 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) Travelstar 32GH/30GT/20GN hard disk drive specifications 111

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13.5 Format Track (50h: vendor specific)
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 75. 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 is not verified for the
correct sector of data initialization.
Any data previously stored on the track will be lost.
The host transfers a sector of data containing a format table to the device. The format table should contain
two bytes for each sector on the track to be formatted. The structure of the format table is shown in Figure
75 on page 112. The first byte should contain a descriptor value and the second byte should contain the
sector number. The descriptor value should be 0 for a good sector. Any other descriptor value will cause
an aborted error. The remaining bytes of the sector following the format table are ignored.
Since device performance is optimal at a 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)
Travelstar 32GH/30GT/20GN hard disk drive specifications
111