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Table 6
Identify Device commands (continued)
Word
Description
50
Capabilities:
15 Shall be cleared to zero
14 Shall be set to one
13:2 Reserved
1 Obsolete
0 Shall be set to one to indicate a vendor specific Standby timer value
minimum
51
PIO data-transfer cycle timing mode
52
Retired (Obsolete)
53
15:8 Free-fall Control Sensitivity
7:3 Reserved
2 the fields reported in word 88 are valid
1 the fields reported in words (70:64) are valid
0 Obsolete
54
Number of current logical cylinders (Obsolete)
55
Number of current logical heads (Obsolete)
56
Number of current logical sectors per logical track (Obsolete)
57–58
Current capacity in sectors (Obsolete)
59
15 The BLOCK ERASE EXT command is supported
14 The OVERWRITE EXT command is supported
13 The CRYPTO SCRAMBLE EXT command is supported
12 The Sanitize feature set is supported
11:9 Reserved
8 Multiple logical sector setting is valid
7:0 Current setting for number of logical sectors that shall be transferred per
DRQ data block on READ/WRITE Multiple commands
60–61
Total number of user-addressable LBA sectors available
(see Section 2.2 for related information)
*Note: The maximum value allowed in this field is: 0FFFFFFFh (268,435,455
sectors, 137GB). Drives with capacities over 137GB will have 0FFFFFFFh in this field
and the actual number of user-addressable LBAs specified in words 100-103. This
is required for drives that support the 48-bit addressing feature.
62
Obsolete
63
Multiword DMA active and modes supported
(see note following this table)
64
Advanced PIO modes supported (modes 3 and 4 supported)
65
Minimum multiword DMA transfer cycle time per word (120 nsec)
66
Recommended multiword DMA transfer cycle time per word (120 nsec)
67
Minimum PIO cycle time without IORDY flow control (240 nsec)
68
Minimum PIO cycle time with IORDY flow control (120 nsec)
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. E
SATA Interface
Value
4000
H
0200
H
0200
H
0007
H
H
H
H
H
5C10
H
0FFFFFFFh*
0000
H
07
H
0003
H
0078
H
0078
H
0078
H
0078
H
27
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