5.3 Host Commands

At command issuance (I/O registers setting contents)

1F7H(CM)

1

1

1

 

0

1

1

1

1

1F6H(DH)

×

×

×

 

DV

xx

 

 

 

 

 

 

 

 

 

 

 

 

 

1F5H(CH)

xx

 

 

 

 

 

 

 

 

1F4H(CL)

xx

 

 

 

 

 

 

 

 

1F3H(SN)

xx

 

 

 

 

 

 

 

 

1F2H(SC)

xx or transfer mode

 

 

 

 

 

1F1H(FR)

[See Table 5.6]

 

 

 

 

 

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)

xx

 

 

 

 

1F2H(SC)

xx

 

 

 

 

1F1H(ER)

Error information

 

 

The host sets X’03’ to the Features register. By issuing this command with setting a value to the Sector Count register, the transfer mode can be selected. Upper 5 bits of the Sector Count register defines the transfer type and lower 3 bits specifies the binary mode value.

The IDD supports following values in the Sector Count register value. If other value than below is specified, an ABORTED COMMAND error is posted.

PIO default transfer mode

00000

000

(X’00’)

PIO default transfer mode

00000

001

(X’01’)

(without IORDY)

 

 

 

PIO flow control transfer mode X

00001

000 (X’08’: Mode 0)

 

00001

001

(X’09’: Mode 1)

 

00001

010 (X’0A’: Mode 2)

 

00001

011

(X’0B’: Mode 3)

 

00001

100

(X’0C’: Mode 4)

C141-E042-01EN

5-39

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Fujitsu MHA2021AT, MHA2032AT manual Host Commands