Fujitsu MHV2040AS, MHV2080AS, MHV2060AS manual Unload Feature Unload Immediate Command

Interface

(11)IDLE IMMEDIATE (X’95’ or X’E1’) / UNLOAD IMMEDIATE (X’95’ or X’E1’)

•Default function

Upon receipt of this command, the device sets the BSY bit of the Status register, and enters the idle mode. Then, the device clears the BSY bit, and generates an interrupt. This command does not support the APS timer function.

At command issuance (I/O registers setting contents)

1F7H(CM)	X’95’ or X’E1’
1F6H(DH)	x	x	x	DV	xx
1F5H(CH)	xx
1F4H(CL)	xx
1F3H(SN)	xx
1F2H(SC)	xx
1F1H(FR)	xx

At command completion (I/O registers contents to be read)

1F7H(ST)	Status information
1F6H(DH)	x	x	x	DV	xx
1F5H(CH)	xx
1F4H(CL)	xx
1F3H(SN)	xx
1F2H(SC)	xx
1F1H(ER)	Error information

•Unload Feature (Unload Immediate Command):

When the device received the IDLE IMMEDIATE command with the UNLOAD FEATURE, the head(s) is unloaded to the ramp position. After the device completed the unload operation, the INTRQ signal will be asserted and the BUSY flag will be cleared. The time until the head(s) unload to the ramp position is typically less than 500 milliseconds. This unload operation is not same as the power management operation. The device just unloads the head(s), and not executes the power consumption restraint operation. This unload operation effects the normal (not emergency) load/unload guarantee count per the device life.

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