4.5 ATA Commands

Table 4.33 Transfer setting values in the SC register

Setting value

Function

ODD response

 

 

 

 

Bit 7 to bit 3

Bit 2 to bit 0

 

 

 

 

 

 

0000

000

PIO default transfer mode

Ends normally.

 

 

 

 

00000

001

PIO default transfer mode

Ends normally.

 

 

(The IORDY signal is not

 

 

010 to 111

Reports Aborted Command.

 

used.)

 

 

 

 

 

 

 

00001

000

PIO flow control transfer

Ends normally.

 

 

mode

 

 

001

Ends normally.

 

(The IORDY signal is used.)

 

 

 

 

010

 

Ends normally.

 

 

 

 

 

011

 

Ends normally.

 

 

 

 

 

100

 

Ends normally.

 

 

 

 

 

101 to 111

 

Reports Aborted Command.

 

 

 

 

00010

000 to 111

Reserved

Reports Aborted Command.

 

 

 

 

00100

000

Multiword DMA transfer

Sets multiword DMA mode as the

 

 

mode

ODD internal transfer mode and

 

 

 

ends normally

 

 

 

 

00100

001

 

Sets multiword DMA mode as the

 

 

 

ODD internal transfer mode and

 

 

 

ends normally

 

 

 

 

00100

010

 

Sets multiword DMA mode as the

 

 

 

ODD internal transfer mode and

 

 

 

ends normally

 

 

 

 

00100

011 to 111

 

Reports Aborted Command.

 

 

 

 

01000

000

Ultra DMA transfer mode

Sets Ultra DMA mode as the ODD

 

 

 

internal transfer mode and ends

 

 

 

normally.

 

 

 

 

 

001

 

Sets Ultra DMA mode as the ODD

 

 

 

internal transfer mode and ends

 

 

 

normally.

 

 

 

 

 

010

 

Sets Ultra DMA mode as the ODD

 

 

 

internal transfer mode and ends

 

 

 

normally.

 

 

 

 

 

011 to 111

 

Reports Aborted Command.

 

 

 

 

10000

000 to 111

Reserved

Reports Aborted Command.

 

 

 

 

C156-E227-01EN

4-39

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Fujitsu MCM3130AP, MCM3064AP manual Transfer setting values in the SC register