Fujitsu MPD3XXXAT At command issuance I/O registers setting contents, 1F7 HCM, 1F6 HDH, 1F5 HCH

Models: MPD3XXXAT

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Max head/LBA [MSB]

At command issuance (I/O registers setting contents)

1F7H(CM)

1

1

1

1

1

0

0

1

 

 

 

 

 

 

 

 

 

1F6H(DH)

×

L

 

×

DV

 

Max head/LBA [MSB]

 

 

 

 

 

 

 

 

 

1F5H(CH)

 

 

Max. cylinder [MSB]/Max. LBA

 

 

1F4H(CL)

 

 

Max. cylinder [LSB]/Max. LBA

 

 

1F3H(SN)

 

 

Max. sector/Max. LBA [LSB]

 

 

1F2H(SC)

 

 

 

 

xx

 

 

 

 

VV

 

 

 

 

 

 

 

 

 

 

1F1H(FR)

 

 

 

 

 

xx

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

1F7H(ST)

 

 

 

 

Status information

 

 

 

 

 

 

 

 

 

1F6H(DH)

×

×

 

×

 

DV

 

Max head/LBA [MSB]

 

 

 

 

 

 

 

1F5H(CH)

 

 

Max. cylinder [MSB]/Max. LBA

1F4H(CL)

 

 

Max. cylinder [LSB]/Max. LBA

1F3H(SN)

 

 

Max. sector/Max. LBA [LSB]

1F2H(SC)

 

 

 

 

 

 

xx

 

 

 

 

 

 

1F1H(ER)

 

 

 

 

Error information

 

 

 

 

 

 

 

 

 

(37)READ NATIVE MAX ADDRESS (F8)

This command posts the maximum address intrinsic to the device, which can be set by the SET MAX ADDRESS command. Upon receipt of this command, the device sets the BSY bit and indicates the maximum address in the DH, CH, CL and SN registers. Then, it clears BSY and generates an interrupt.

At command issuance (I/O registers setting contents)

1F7H(CM)

1

1

1

1

1

0

0

0

 

 

 

 

 

 

 

 

 

 

1F6H(DH)

×

L

×

DV

 

 

 

xx

 

 

 

 

 

 

 

 

 

 

 

1F5H(CH)

 

 

 

 

xx

 

 

 

1F4H(CL)

 

 

 

 

xx

 

 

 

1F3H(SN)

 

 

 

 

xx

 

 

 

1F2H(SC)

 

 

 

 

xx

 

 

 

1F1H(FR)

 

 

 

 

xx

 

 

 

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C141-E069-02EN

Page 131
Image 131
Fujitsu MPD3XXXAT At command issuance I/O registers setting contents, 1F7 HCM, 1F6 HDH, Max head/LBA MSB, 1F5 HCH, 1F4 HCL