Format Track (50H: Vendor Specific); Figure 75. Format Track Command (50H) - IBM DJSA-210 - Travelstar 10 GB Hard Drive Specifications

13.5 Format Track (50h: vendor specific)

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

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
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
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
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
0 7 6 5
BSY RDY DF
0 0 V V
111
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
4 3 2 1
DSC DRQ COR IDX ERR
V – 0 –
0
V