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Table 17: Diagnostic Codes
Code
01h
02h
03h
04h
05h
Error Type
No Error Detected
Formatter Device Error
Sector Buffer Error
ECC Circuitry Error
Controlling Microprocessor Error
6.4 Flush Cache (E7h)
This command causes the drive to complete writing data from its cache. The drive returns status with RDY=1 and
DSC=1 after the data in the write cache buffer is written to the media. If the drive does not support the Flush
Cache command, the drive shall return command aborted.
Table 18: 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
6.5 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 19 for the DATA SET MANAGEMENT command inputs.
Table 19: 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
An unrecoverable error encountered while writing data results in aborting the command and the Command
Block registers contain the 48 – bit sector address of the sector where the first unrecoverable error occurred.
Subsequent FLUSH CACHE EXT commands continue the process of flushing the cache starting with the first sector
after the sector in error.
This command is used by the host to request the device to flush the write cache. If there is data in the write
cache, that data shall be written to the media. The BSY bit shall remain set to one until all data has been
successfully written or an error occurs.
6.6 Format track (50h)
This command writes the desired head and cylinder of the selected drive with a vendor unique data pattern
(typically FFh or 00h). To remain host backward compatible, the CompactFlash TM Storage Card expects a sector
buffer of data from the host to follow the command with the same protocol as the Write Sector(s) command
although the information in the buffer is not used by the CompactFlash TM Storage Card. If LBA=1 then the number
of sectors to format is taken from the Sec Cnt register (0=256). The use of this command is not recommended.
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 0.92
CH-9552 Bronschhofen
Switzerland
F-240_data_sheet_CA-HxBV_Rev092.doc
Page 17 of 56
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