IBM DTCA-24090 Hard Drive Specifications - Page 110

Format Track, 50h: Vendor Specific

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12.4 Format Track (50h: Vendor Specific) Command Block Output Registers Register 76543210 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 1L1DHHHH Command 01010000 Command Block Input Registers Register 76543210 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 HHHH Status ...See Below... Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 000V0V00 Status Register 76543210 BSY RDY DF DSC DRQ COR IDX ERR 0VVV 0 V Figure 60. 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, whether the sector of data is initialized correctly is not verified with read operation. 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 format table is shown in Figure 61 on page 103. 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, and 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 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 ) 102 OEM Specifications of DTCA-2xxxx 2.5 inch H D D

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12.4 Format Track
(50h: Vendor Specific)
Command Block Output Registers
Command Block Input Registers
Register
76543210
Register
76543210
Data
Data
Feature
Error
...See Below...
Sector Count
Sector Count
Sector Number
VVVVVVVV
Sector Number
VVVVVVVV
Cylinder Low
VVVVVVVV
Cylinder Low
VVVVVVVV
Cylinder High
VVVVVVVV
Cylinder High
VVVVVVVV
Device/Head
1L1DHHHH
Device/Head
HHHH
Command
01010000
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
V
V
0
V
Figure 60. 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, whether the sector of data is initialized
correctly is not verified with read operation. 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 format table is shown in Figure 61
on page 103.
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, and 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 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)
102
OEM Specifications of DTCA-2xxxx 2.5 inch HDD