Fujitsu MPA3017AT At command issuance I/O registers setting contents, 1F7 HCM, 1F6 HDH, 1F5 HCH

Models: MPA3017AT MPA3035AT MPA3026AT MPA3052AT MPA3043AT

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01H (*1)

At command issuance (I/O registers setting contents)

1F7H(CM)

1

0

0

1

0

0

0

0

 

 

 

 

 

 

 

 

 

 

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)

 

 

 

 

01H (*1)

 

1F2H(SC)

 

 

 

 

01H

 

1F1H(ER)

 

 

 

Diagnostic code

 

 

 

 

 

 

 

 

 

*1 This register indicates X‘00’ in the LBA mode.

(17)FORMAT TRACK (X'50')

Upon receipt of this command, the device sets the DRQ bit and waits the completion of 512-byte format parameter transfer from the host system. After completion of transfer, the device clears the DRQ bits, sets the BSY bit. However the device does not perform format operation, but the drive clears the BYS bit and generates an interrupt soon. When the command execution completes, the device clears the BSY bit and generates an interrupt.

The drive supports this command for keep the compatibility with previous drive only.

(18)READ LONG (X'22' or X'23')

This command operates similarly to the READ SECTOR(S) command except that the device transfers the data in the requested sector and the ECC bytes to the host system. The ECC error correction is not performed for this command. This command is used for checking ECC function by combining with the WRITE LONG command.

Number of ECC bytes to be transferred is fixed to 4 bytes and cannot be changed by the SET FEATURES command.

The READ LONG command supports only single sector operation.

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C141-E034-02EN

Page 99
Image 99
Fujitsu MPA3017AT At command issuance I/O registers setting contents, 1F7 HCM, 1F6 HDH, 1F5 HCH, 1F4 HCL, 1F3 HSN, 1F2 HSC