Table 76.Device Configuration Overlay Data Structure - Hitachi 7K80 - Deskstar - Hard Drive Specifications

Table 77: Device Configuration Overlay Data structure
Word
0 0001h
Multiword DMA modes supported
15-3
1 2
1
0
2 Ultra DMA modes supported
15-6
5
4
3
2
1
0
3-6 Maximum LBA address
7 Command set/feature set supported
15-9
8
7
6
5
4
3
2
1
0
8-254 Reserved
255 Integrity word
15-8
7-0
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 con-
sisting 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.
Content
Data Structure revision
Reserved
1 = Multiword DMA mode 2 and below are supported
1 = Multiword DMA mode 1 and below are supported
1 = Multiword DMA mode 0 is supported
Reserved
1 = Ultra DMA mode 5 and below are supported
1 = Ultra DMA mode 4 and below are supported
1 = Ultra DMA mode 3 and below are supported
1 = Ultra DMA mode 2 and below are supported
1 = Ultra DMA mode 1 and below are supported
1 = Ultra DMA mode 0 is supported
Reserved
1 = 48-bit addressing feature set supported
1 = Host Protected Area feature set supported
1 = Automatic acoustic management supported
1 = Read/Write DMA Queued commands supported
1 = Power-up in Standby feature set supported
1 = Security feature set supported
1 = SMART error log supported
1 = SMART self-test supported
1 = SMART feature set supported
(see note below)
Checksum
Signature (A5h)
Deskstar 7K80 Hard Disk Drive Specification
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