Fujitsu MPA3043AT At command issuance I/O registers setting contents, 1F7 HCM, 1F6 HDH, 1F5 HCH

Models: MPA3017AT MPA3035AT MPA3026AT MPA3052AT MPA3043AT

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Number of sectors to be transferred

At command issuance (I/O registers setting contents)

1F7H(CM)

0

0

1

 

0

 

0

0

1

R

1F6H(DH)

×

L

 

×

 

DV

 

Head No. /LBA [MSB]

 

 

 

 

 

 

 

 

 

 

1F5H(CH)

 

 

Cylinder No. [MSB] / LBA

 

 

 

1F4H(CL)

 

 

Cylinder No. [LSB]

/ LBA

 

 

 

1F3H(SN)

 

 

Sector No.

 

 

/ LBA [LSB]

 

 

1F2H(SC)

 

 

Number of sectors to be transferred

 

 

1F1H(FR)

 

 

 

 

 

xx

 

 

 

 

R= 0 with Retry R = 1 without Retry

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

1F7H(ST)

 

 

 

 

Status information

 

 

 

 

 

 

 

 

 

1F6H(DH)

×

L

 

×

 

DV

 

Head No. /LBA [MSB]

 

 

 

 

 

 

 

1F5H(CH)

 

 

Cylinder No. [MSB] / LBA

1F4H(CL)

 

 

Cylinder No. [LSB]

/ LBA

1F3H(SN)

 

 

Sector No.

/ LBA [LSB]

1F2H(SC)

 

 

 

 

00 (*1)

1F1H(ER)

 

 

 

 

Error information

*1 If the command is terminated due to an error, this register indicates 01.

(19)WRITE LONG (X'32' or X'33')

This command operates similarly to the READ SECTOR(S) command except that the device writes the data and the ECC bytes transferred from the host system to the disk medium. The device does not generate ECC bytes by itself. The WRITE LONG command supports only single sector operation.

The number of ECC bytes to be transferred is fixed to 4 bytes and can not be changed by the SET FEATURES command.

This command is operated under the following conditions:

The command is issued in a sequence of the READ LONG or WRITE LONG (to the same address) command issuance. (WRITE LONG command can be continuously issued after the READ LONG command.)

If above condition is not satisfied, the command operation is not guaranteed.

C141-E034-02EN

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Fujitsu MPA3043AT At command issuance I/O registers setting contents, 1F7 HCM, 1F6 HDH, Head No. /LBA MSB, 1F5 HCH, 00 *1