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10.1 Check Power Mode (98h or E5h)
This command checks the power mode.
Issuing the command while the Card 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 Card is in Idle mode will set BSY, set the Sector Count Register to FFh, clear BSY
and generate an interrupt.
Table 57: 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
10.2 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 58 defines the Byte sequence of the Erase Sector command.
Table 58: 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
10.3 Execute Drive Diagnostic (90h)
This command performs the internal diagnostic tests implemented by the Card.
In PCMCIA configuration, this command only runs on the Card which is addressed by the Drive/Head register when
the command is issued. This is because PCMCIA Card interface does not allow for direct inter-drive
communication.
In True IDE Mode, 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 59 defines the Execute Drive Diagnostic command Byte sequence. The Diagnostic codes shown in Table 60
are returned in the Error Register at the end of the command.
Table 59: Execute Drive Diagnosti c
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
nu
nu
nu
nu
nu
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.20
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
C-320_data_sheet_CF-HxBO_Rev120.doc
Page 57 of 101
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