Filter
Top Products
C141-E112-01EN 5 - 35
(13) IDENTIFY DEVICE DMA (X'EE')
When this command is not used to transfer data to the host in DMA mode, this command
functions in the same way as the Identify Device command.
At command issuance (I/O registers setting contents)
1F7
H
(CM) 11101110
1F6
H
(DH)
×××
DV xx
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
xx
xx
xx
xx
xx
At command completion (I/O registers contents to be read)
1F7
H
(ST) Status information
1F6
H
(DH)
×××
DV xx
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
xx
xx
xx
xx
Error information
(14) SET FEATURES (X'EF')
The host system issues the SET FEATURES command to set parameters in the Features register
for the purpose of changing the device features to be executed. For the transfer mode (Feature
register = 03), detail setting can be done using the Sector Count register.
Upon receipt of this command, the device sets the BSY bit of the Status register and saves the
parameters in the Features register. Then, the device clears the BSY bit, and generates an
interrupt.
If the value in the Features register is not supported or it is invalid, the device posts an
ABORTED COMMAND error.
Table 5.6 lists the available values and operational modes that may be set in the Features register.