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 IdentifyDevice information. However, the actual
data transfer rate depends on the serial ATA signaling rate in WORD 76
in IdentifyDevice information.
Transfer mode
Sector Count file
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)
00001 100 (X’0C’: Mode 4)
00010 000 (X ' 10 ' : Mode 0)
00010 001 (X ' 11 ' : Mode 1)
00010 010 (X ' 12 ' : Mode 2)
00100 000 (X’20’: Mode 0)
00100 001 (X’21’: Mode 1)
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)
01000 101 (X’45’: Mode 5)
•
PIO default transfer mode
•
PIO flow control transfer mode X
•
Single word DMA Mode X
•
Multiword DMA transfer mode X
•
Ultra DMA transfer mode X
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C141-E245
Содержание MHW2040BH - Mobile 40 GB Hard Drive
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