5.3 Host Commands

At command issuance (Shadow Block Registers setting contents)

CM

1

1

0

0

1

0

0

R

 

 

 

 

 

 

 

 

DH

x

L

x

x

 

HD No. / LBA

 

 

 

 

 

 

 

 

 

CH

 

Start cylinder No. [MSB] / LBA

 

 

CL

 

Start cylinder No. [LSB]

/ LBA

 

 

SN

 

Start sector No.

 

/ LBA [LSB]

 

SC

 

 

Transfer sector count

 

 

FR

 

 

 

 

xx

 

 

 

 

 

 

 

 

 

 

 

 

At command completion (Shadow Block Registers contents to be read)

ST

 

 

 

Status information

 

 

 

 

 

 

 

 

DH

x

L

x

 

x

 

HD No. / LBA

 

 

 

 

 

 

CH

 

Start cylinder No. [MSB] / LBA

CL

 

Start cylinder No. [LSB]

/ LBA

SN

 

Start sector No.

/ LBA [LSB]

SC

 

 

 

00 (*1)

 

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.

C141-E262

5-97

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Image 175
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