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At command completion (I/O registers contents to be read)
1F7
(ST)
H
1F6
(DH)
H
1F5
(CH)
H
1F4
(CL)
H
1F3
(SN)
H
1F2
(SC)
H
1F1
(ER)
H
(27)
CHECK POWER MODE (X'98' or X'E5')
The host checks the power mode of the device with this command.
The host system can confirm the power save mode of the device by analyzing the contents of the
Sector Count and Sector registers.
The device sets the BSY bit and sets the following register value. After that, the device clears the
BSY bit and generates an interrupt.
Power save mode
• During moving to standby mode
• Standby mode
• During returning from the standby mode
• Idle mode
• Active mode
At command issuance (I/O registers setting contents)
1F7
(CM)
H
1F6
(DH)
H
1F5
(CH)
H
1F4
(CL)
H
1F3
(SN)
H
1F2
(SC)
H
1F1
(FR)
H
Status information
DV
xx
xx
xx
xx
xx
Error information
Sector Count register
X'00'
X'80'
X'FF'
X'98' or X'E5'
DV
xx
xx
xx
xx
xx
xx
C141-E110-02EN
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