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(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)
1F7
H
(CM) X’95’ or X’E1’
1F6
H
(DH) x x x 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) x x x DV xx
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
xx
xx
xx
xx
Error information
• Unload Feature:
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.
5-34 C141-E258