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10.45 Write Sector(s) Ext (34h) 48bit LBA
This is the 48-bit address version of the Write Sector(s) command.
This command writes from 1 to 65,536 sectors as specified in the Sector Count Register. A sector count value of
0000h requests 65,536 sectors. The device shall interrupt for each DRQ block transferred.
If an error occurs during a write of more than one sector, writing terminates at the sector where the error occurs.
The Command Block Registers contain the 48-bit LBA of the sector where the error occurred. The host may then
read the command block to determine what error has occurred, and on which sector.
Table 108: Write Sector(s) Ext
register write
previous
current
Task File Register
15:8
7
6
5
4
3
2
1
0
COMMAND
-
34h
DRIVE/HEAD
-
1
1
1
Drive
Reserved
LBA High
LBA Mid
LBA Low
SECTOR COUNT
FEATURES
LBA (47:40)
LBA (39:32)
LBA (31:24)
15:8
nu
LBA (23:16)
LBA (15:8)
LBA (7:0)
7:0
nu
10.46 Write Sector(s) without Erase (38h)
This command is similar to the Write Sector(s) command with the exception that an implied erase before write
operation is not performed. This command has the same protocol as the Write Sector(s) command. The sectors
should be pre-erased with the Erase Sector(s) command before this command is issued. If the sector is not pre-
erased a normal write sector operation will occur. Table 109 defines the Write Sector(s) without Erase command
Byte sequence.
Table 109: Write Sector(s) without Erase
Task File Register
7
6
5
4
3
2
1
0
COMMAND
38h
DRIVE/HEAD
1
LBA
1
D
Head (LBA 27:24)
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
Cylinder High (LBA23:16)
Cylinder Low (LBA15:8)
Sector number (LBA7:0)
Sector Count
nu
10.47 Write Verify (3Ch)
This command is similar to the Write Sector(s) command, except each sector is verified immediately after being
written. This command has the same protocol as the Write Sector(s) command. Table 110 defines the Write Verify
command Byte sequence.
Table 110: Write Verify
Task File Register
7
6
5
4
3
2
1
0
COMMAND
3Ch
DRIVE/HEAD
1
LBA
1
D
Head (LBA 27:24)
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
Cylinder High (LBA23:16)
Cylinder Low (LBA15:8)
Sector number (LBA7:0)
Sector Count
nu
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.00
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
C-440_data_sheet_CF-HxBU_Rev100.doc
Page 86 of 102
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