Fujitsu MHA2021AT, MHA2032AT manual ’95’ or X’E1’

5.3 Host Commands

(22) IDLE IMMEDIATE (X’95’ or X’E1’)

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 automatic power-down function.

At command issuance (I/O registers setting contents)

1F7H(CM)	X’95’ or X’E1’
1F6H(DH)	×	×	×	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)	×	×	×	DV	xx
1F5H(CH)	xx
1F4H(CL)	xx
1F3H(SN)	xx
1F2H(SC)	xx
1F1H(ER)	Error information

(23) STANDBY (X’96’ or X’E2’)

Upon receipt of this command, the device sets the BSY bit of the Status register and enters the standby mode. The device then clears the BSY bit and generates an interrupt. The device generates an interrupt even if the device has not fully entered the standby mode. If the device has already spun down, the spin-down sequence is not implemented.

By using this command, the automatic power-down function is enabled and the timer starts the countdown when the device returns to idle mode.

When the timer value reaches 0 (a specified time has padded), the device enters standby mode.

C141-E042-01EN 5-49