Seagate Desktop HDD Product Manual, Rev. A
24
SATA Interface
Table 7
Identify Deice commands (continued)
Word
Description
Value
50
Capabilities (see 7.17.7.17)
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
4000
H
51
PIO data-transfer cycle timing mode (Obsolete)
0200
H
52
Retired (Obsolete)
0200
H
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
0007
H
54
Number of current logical cylinders (Obsolete)
xxxx
H
55
Number of current logical heads (Obsolete)
xxxx
H
56
Number of current logical sectors per logical track (Obsolete)
xxxx
H
57–58
Current capacity in sectors (Obsolete)
xxxx
H
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
5C10
H
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.
0FFFFFFFh*
62
Obsolete
0000
H
63
Multiword DMA active and modes supported
(see note following this table)
xx
07
H
64
Advanced PIO modes supported (modes 3 and 4 supported)
0003
H
65
Minimum multiword DMA transfer cycle time per word (120 nsec)
0078
H
66
Recommended multiword DMA transfer cycle time per word (120 nsec)
0078
H
67
Minimum PIO cycle time without IORDY flow control (240 nsec)
0078
H
68
Minimum PIO cycle time with IORDY flow control (120 nsec)
0078
H
