Fujitsu MHZ2250BJ Manuel d'utilisateur télécharger pdf (Page 196)

Interface

*1) Data Transfer Mode

The host sets X '03' to the Features field. By issuing this command with setting a

value to the Sector Count Field, 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 Field value. If other value

than below is specified, an ABORTED COMMAND error is posted.

Note: For a serial ATA device, the setting of a data transfer mode is reflected in

WORD 63 and 88 in Identify Device information. However, the actual

data transfer rate depends on the serial ATA signaling rate in WORD 76

in Identify Device information.

Transfer mode Sector Count file

• PIO default transfer mode

00000 000 (X '00')

00001 000 (X '08': Mode 0)

00001 001 (X '09': Mode 1)

00001 010 (X '0A': Mode 2)

00001 011 (X '0B': Mode 3)

• PIO flow control transfer mode X

00001 100 (X '0C': Mode 4)

00010 000 (X '10': Mode 0)

00010 001 (X '11': Mode 1)

• Single word DMA Mode X

00010 010 (X '12': Mode 2)

00100 000 (X '20': Mode 0)

00100 001 (X '21': Mode 1)

• Multiword DMA transfer mode X

00100 010 (X '22': Mode 2)

01000 000 (X '40': Mode 0)

01000 001 (X '41': Mode 1)

01000 010 (X '42': Mode 2)

01000 011 (X '43': Mode 3)

01000 100 (X '44': Mode 4)

• Ultra DMA transfer mode X

01000 101 (X '45': Mode 5)

5-122 C141-E280

1 2 ... 191 192 193 194 195 196 197 198 199 200 201 ... 319 320

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Fujitsu MHZ2250BJ Manuel d'utilisateur Page 196