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10.29 Set Sleep Mode (99h or E6h)
This command causes the CompactFlash Memory Card to set BSY, enter the Sleep mode, clear BSY and generate an
interrupt. Recovery from sleep mode is accomplished by simply issuing another command. Sleep mode is also
entered when internal timers expire so the host does not need to issue this command except when it wishes to
enter Sleep mode immediately. The default value for the timer is 20 milliseconds. Note that this time base (5ms)
is different from the ATA Specification. Table 95 defines the Set Sleep Mode command Byte sequence.
Table 95: Set Sleep Mode
Task File Register
7
6
5
4
3
2
1
0
COMMAND
99h or E6h
DRIVE/HEAD
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
D
nu
nu
nu
nu
nu
nu
10.30 S.M.A.R.T. (B0h)
The intent of self-monitoring, analysis, and reporting technology (the SMART feature set) is to protect user data and
minimize the likelihood of unscheduled system downtime that may be caused by predictable degradation and/or
fault of the device. By monitoring and storing critical performance and calibration parameters, SMART feature set
devices attempt to predict the likelihood of near-term degradation or fault condition. Providing the host system the
knowledge of a negative reliability condition allows the host system to warn the user of the impending risk of a data
loss and advise the user of appropriate action. Support of this feature set is indicated in the IDENTIFY DEVICE data
(Word 82 bit 0).
Table 96: S.M.A.R.T. Features
Task File Register
7
6
5
4
3
2
1
0
COMMAND
B0h
DRIVE/HEAD
1
1
1
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
C2h
4Fh
nu
XXh
Feature
Details of S.M.A.R.T. features are described in Section 11.
10.31 Standby (96h or E2)
This command causes the Card to set BSY, enter the Sleep mode (which corresponds to the ATA ‘Standby’ Mode),
clear BSY and return the interrupt immediately. Recovery from Sleep mode is accomplished by issuing another
command. Table 97 defines the Standby command Byte sequence.
Table 97: Standby
Task File Register
7
6
5
4
3
2
1
0
COMMAND
96h or E2h
DRIVE/HEAD
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
D
nu
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 77 of 101
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