Hitachi HDS723020BLA642 manual Device Configuration Overlay Data structure

Models: HDS723020BLA642

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7K200 SATA OEM Specification

Word

Content

 

 

 

0

0002h

Data Structure revision

 

1

Multiword DMA

modes supported

 

 

15-3

Reserved

 

 

2

1

= Multiword DMA mode 2 and below are supported

 

 

1

1

= Multiword DMA mode 1 and below are supported

 

 

0

1

= Multiword DMA mode 0 is supported

 

2

Ultra DMA modes

supported

 

 

15-6

Reserved

 

 

5

1

= Ultra DMA mode 5 and below are supported

 

 

4

1

= Ultra DMA mode 4 and below are supported

 

 

3

1

= Ultra DMA mode 3 and below are supported

 

 

2

1

= Ultra DMA mode 2 and below are supported

 

 

1

1

= Ultra DMA mode 1 and below are supported

 

 

0

1

= Ultra DMA mode 0 is supported

 

 

 

 

 

3-6

Maximum LBA

address

7

Command set/feature set supported

 

 

15-9

Reserved

 

 

8

1

= 48-bit Addressing feature set supported

 

 

7

1

= Host Protected Area feature set supported

 

 

6

1

= Automatic acoustic management supported

 

 

5

Reserved

 

 

4

1

= Power-Up in Standby feature set supported

 

 

3

1

= Security feature set supported

 

 

2

1

= SMART error log supported

 

 

1

1

= SMART self-test supported

 

 

0

1

= SMART feature set supported

 

8

SATA feature

 

 

 

 

15-5

Reserved

 

 

4

1

= Software setting preservation supported

 

 

3

Reserved

 

 

2

1

= Interface power management supported

 

 

1

1

= Non-zero buffer offset in DMA Setup FIS supported

 

 

0

1

= Native command queuing supported

 

9-254

Reserved

 

 

 

255

Integrity word <Note .>

 

 

15-8

Checksum

 

 

7-0

Signature (A5h)

 

 

 

 

 

 

Table 46 Device Configuration Overlay Data structure

Note.

Bits 7:0 of this word contain the value A5h. Bits 15:8 of this word contain the data structure checksum. The data structure checksum is the two’s complement of the sum of all byte in words 0 through 254 and the byte consisting of bits 7:0 of word 255. Each byte is added with unsigned arithmetic, and overflow is ignored. The sum of all bytes is zero when the checksum is correct.

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Page 81
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Hitachi HDS723020BLA642 manual Device Configuration Overlay Data structure