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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 58 defines the Execute Drive Diagnostic command Byte sequence. The Diagnostic codes shown in Table 59
are returned in the Error Register at the end of the command.
Table 58: 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
Table 59: Diagnostic Codes
Code
01h
02h
03h
04h
05h
8Xh
nu
nu
nu
nu
nu
Error Type
No Error Detected
Formatter Device Error
Sector Buffer Error
ECC Circuitry Error
Controlling Microprocessor Error
Slave Error in True IDE Mode
10.5 Flush Cache (E7h)
This command causes the card to complete writing data from its cache. The card returns status with RDY=1 and
DSC=1 after the data in the write cache buffer is written to the media. If the Compact Flash Storage Card does not
support the Flush Cache command, the Compact Flash Storage Card shall return command aborted.
Table 60: Flush Cache
Task File Register
7
6
5
4
3
2
1
0
COMMAND
E7h
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
nu
nu
10.6 Flush Cache Ext (EAh) 48bit LBA
This command causes the card to complete writing data from its volatile cache into non-volatile memory. The BSY
bit shall remain set to one until all data has been successfully written or an error occurs. The card returns status
with RDY=1 and DSC=1 after the data in the write cache buffer is written to the media. If the Compact Flash
Storage Card does not support the Flush Cache Ext command, the Compact Flash Storage Card shall return
command aborted. See Table 61 for the DATA SET MANAGEMENT command inputs.
Table 61: Flush cache Ext
register write
previous
current
Task File Register
15:8
7
6
5
4
3
2
1
0
COMMAND
-
EAh
DRIVE/HEAD
-
1
1
1
Drive
Reserved
LBA High
LBA Mid
LBA Low
SECTOR COUNT
FEATURES
nu
nu
nu
nu
nu
nu
nu
nu
nu
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 59 of 102
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