5.3 Host Commands

Table 5.4 Information to be read by IDENTIFY DEVICE command (5 of 7)

Bit 9, 8:

Always 1

 

 

 

*4 Word 51: PIO data transfer mode

 

 

Bit 15-8:

PIO data transfer mode

X’02’=PIO mode 2

Bit 7-0:

Undefined

 

 

*5 Word 53: Enable/disable setting of word 54-58 and 64-70

Bit 15-3:

Reserved

 

 

 

Bit 2:

Enable/disable setting of word 88

1=Enable

Bit 1:

Enable/disable setting of word 64-70

1=Enable

Bit 0:

Enable/disable setting of word 54-58

1=Enable

*6 Word 59:

Transfer sector count currently set by READ/WRITE MULTIPLE

 

command

 

 

Bit 15-9:

Reserved

 

 

 

Bit 8:

Multiple sector transfer

1=Enable

 

Bit 7-0:

Transfer sector count currently set by READ/WRITE MULTIPLE

 

command without interrupt supports 2, 4, 8 and 16 sectors.

*7 Word 63: Multiword DMA transfer mode

 

Bit 15-8:

Currently used multiword DMA transfer mode

Bit 7-0:

Supportable multiword DMA transfer mode

 

 

Bit 2=1

Mode 2

 

 

 

Bit 1=1

Mode 1

 

 

 

Bit 0=1

Mode 0

 

 

*8 Word 64: Advance PIO transfer mode support status

 

Bit 15-8:

Reserved

 

 

 

Bit 7-0:

Advance PIO transfer mode

 

 

Bit 1 = 1 Mode 4

 

 

 

Bit 0 = 1 Mode 3

 

 

*9 WORD 80

 

 

 

 

Bit 15-5:

Reserved

 

 

 

Bit 4:

ATA/ATAPI-4 supported = 1

 

Bit 3:

ATA-3 supported = 1

 

 

C141-E057-01EN

5-35

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Fujitsu MHF2021AT, MHF2043AT, MHE2043AT, MHE2064AT manual Information to be read by Identify Device command 5