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6.1 Check Power Mode (98h or E5h)
This command checks the power mode.
Issuing the command while the Drive is in Standby mode, is about to enter Standby, or is exiting Standby, the
command will set BSY, set the Sector Count Register to 00h, clear BSY and generate an interrupt.
Issuing the command when the Drive is in Idle mode will set BSY, set the Sector Count Register to FFh, clear BSY
and generate an interrupt.
Table 15: Check Power Mode
Task File Register
7
6
5
4
3
2
1
0
COMMAND
98h or E5h
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
nu
nu
6.2 Erase Sector(s) (C0h)
This command is used to pre-erase and condition data sectors prior to a Write Sector without Erase command or
a Write Multiple Without Erase command. There is no data transfer associated with this command but a Write
Fault error status can occur. Table 16 defines the Byte sequence of the Erase Sector command.
Table 16: Erase Sector(s)
Task File Register
7
6
5
4
3
2
1
0
COMMAND
C0h
DRIVE/HEAD
nu
L
nu
D
H[3:0] or LBA[27:24] of the starting sector/LBA
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
Cylinder[15:8] or LBA[23:16] of the first sector/LBA to erase
Cylinder[7:0] or LBA[15:8] of the first sector/LBA to erase
Sector[7:0] or LBA[7:0] of the first sector/LBA to erase
The number of sectors/logical blocks to erase
nu
6.3 Execute Drive Diagnostic (90h)
This command performs the internal diagnostic tests implemented by the Drive.
The Drive bit is ignored and the diagnostic command is executed by both the Master and the Slave with the
Master responding with the status for both devices.
Table 17 defines the Execute Drive Diagnostic command Byte sequence. The Diagnostic codes shown in Table 18
are returned in the Error Register at the end of the command.
Table 17: Execute Drive Diagnostic
Task File Register
7
6
5
4
3
2
1
0
COMMAND
90h
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
Table 18: Diagnostic Codes
Code
01h
02h
03h
04h
05h
nu
nu
nu
nu
nu
Error Type
No Error Detected
Formatter Device Error
Sector Buffer Error
ECC Circuitry Error
Controlling Microprocessor Error
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.41
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
F-100_data_sheet_CA-HxBR_Rev141.doc
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