34 Video 3.5 HDD Product Manual, Rev. H
Serial ATA Interface www.seagate.com
47 (Bits 7–0) Maximum sectors per interrupt on Read multiple and
Write multiple (16)
8010
H
48 Reserved 0000
H
49 Standard Standby timer, IORDY supported and may be disabled 2F00
H
50 ATA-reserved 4000
H
51 PIO data-transfer cycle timing mode 0200
H
52 Retired 0200
H
53 Words 54–58, 64–70 and 88 are valid 0007
H
54 Number of current logical cylinders xxxx
H
55 Number of current logical heads xxxx
H
56 Number of current logical sectors per logical track xxxx
H
57–58 Current capacity in sectors xxxx
H
59 Number of sectors transferred during a Read Multiple
or Write Multiple command
xxxx
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, 137 Gbytes). Drives with capacities over
137 Gbytes will have 0FFFFFFFh in this field and the actual num-
ber of user-addressable LBAs specified in words 100-103. This is
required for drives that support the 48-bit addressing feature.
0FFFFFFFh*
62 Retired 0000
H
63 Multiword DMA active and modes supported
(see note following this table)
xx07
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
69–74 ATA-reserved 0000
H
75 Queue depth 001F
H
76 Serial ATA capabilities xxxx
H
77 Reserved for future Serial ATA definition xxxx
H
78 Serial ATA features supported xxxx
H
79 Serial ATA features enabled xxxx
H
80 Major version number 01F0
H
Table 8 Identify Device commands (continued)
Word Description Value