Fujitsu MHD2032AT, MHC2032AT, MHD2021AT, MHC2040AT manual Interface

Interface

After all sectors are verified, the last interruption (INTRQ for command termination) is generated.

At command issuance (I/O registers setting contents)

1F7H(CM)	0	0	1	1	1	1	0	0
1F6H(DH)	×	L	×	DV	Start head No. /LBA [MSB]
1F5H(CH)	Start cylinder No. [MSB] / LBA
1F4H(CL)	Start cylinder No. [LSB] / LBA
1F3H(SN)	Start sector No. / LBA [LSB]
1F2H(SC)	Transfer sector count
1F1H(FR)	xx

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

1F7H(ST)	Status information
1F6H(DH)	×	L	×	DV	End head No. /LBA [MSB]
1F5H(CH)	End cylinder No. [MSB] / LBA
1F4H(CL)	End cylinder No. [LSB] / LBA
1F3H(SN)	End sector No. / LBA [LSB]
1F2H(SC)	00 (*1)
1F1H(ER)	Error information

*1 If the command is terminated due to an error, the remaining number of sectors of which data was not transferred is set in this register.

(9) RECALIBRATE (X’1x’, x: X’0’ to X’F’)

This command performs the calibration. Upon receipt of this command, the device sets BSY bit of the Status register and performs a calibration. When the device completes the calibration, the device updates the Status register, clears the BSY bit, and generates an interrupt.

This command can be issued in the LBA mode.

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