Fujitsu MHM2100AT - Mobile 10 GB Hard Drive Product Manual page 139

Interface
(28) 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.
• 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
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
5-62
Power save mode
X'98' or X'E5'
x x x
xx
xx
xx
xx
xx
Status information
x x x
xx
xx
xx
X'00' ,X'80' or X'FF'
Error information
Sector Count register
X'00'
X'FF'
X'FF'
DV xx
DV xx
C141-E104-03EN