Product manual

30 U Series 9 Product Manual, Rev. C
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 sup-
ported and may be disabled
2F00
H
50 ATA-reserved 0000
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 log-
ical 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 capaci-
ties over 137 Gbytes will have
0FFFFFFFh in this field and the actual
number of user-addressable LBAs speci-
fied in words 100-103. This is required for
drives that support the 48-bit addressing
feature.
ST3160022A =0FFFFFFFh*
ST3120025A = 234,441,648
ST380012A = 156,301,488
62 Retired 0000
H
63 Multiword DMA active and modes sup-
ported (see note following this table)
xx07
H
64 Advanced PIO modes supported (modes
3 and 4 supported)
0003
H
Word Description Value