Hitachi hard disk drive specifications
128
Word
Content
Description
49
xF00H
Capabilities, bit assignments:
15-14 (=0)
Reserved
13
Standby timer
(=1)
values as specified in ATA standard are supported
(=0)
values are vendor specific
12 (=0)
Reserved
11 (=1)
IORDY Supported
10 (=1)
IORDY can be disabled
9 (=1)
LBA supported
8 (=1)
DMA supported
7- 0 (=0)
Reserved
50
4000H
Capabilities, bit assignments:
15-14(=01)
word 50 is valid
13- 1 (=0)
Reserved
0
Minimum value of Standby timer
(=0)
less than 5 minutes
51
0200H
PIO data transfer cycle timing mode
52
0200H
*
DMA data transfer cycle timing mode
Refer Word 62 and 63
53
0007H
Validity flag of the word
15- 8(=0):
Free-fall Control Sensitivity
00h = Vendor‟s recommended setting
7-3(=0):
Reserved
2(=1):
1=Word 88 is Valid
1(=1):
1=Word 64-70 are Valid
0(=1):
1=Word 54-58 are Valid
54
xxxxH
Number of current cylinders
55
xxxxH
Number of current heads
56
xxxxH
Number of current sectors per track
57-58
xxxxH
Current capacity in sectors
Word 57 specifies the low word of the capacity
59
0xxxH
Current Multiple setting. bit assignments
15- 9 (=0)
Reserved
8
1= Multiple Sector Setting is Valid
7- 0
xxh = Current setting for number of sectors
60-61
xxxxH
Total Number of User Addressable Sectors
Word 60 specifies the low word of the number
FFFFFFFh=The 48-bit native max address is greater than 268,435,455
62
0000H
63
xx07H
Multiword DMA Transfer Capability
15- 8
Multi word DMA transfer mode active
7- 0 (=7)
Multi word DMA transfer modes supported
(support mode 0,1 and 2)
64
0003H
Flow Control PIO Transfer Modes Supported
15-8(=0)
Reserved
7-0 (=3)
Advanced PIO Transfer Modes Supported
'11' = PIO Mode 3 and 4 Supported
65
0078H
Minimum Multiword DMA Transfer Cycle Time Per Word
15-0(=78)
Cycle time in nanoseconds (120ns, 16.6MB/s)
Table 80 Identify device information --Continued--