Seagate ST340016A - Page 38

30 Barracuda ATA IV Family Product Manual, Rev. B
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 trans-
ferred during a Read Multiple
or Write Multiple command
xxxx
H
60–61 Total number of user-addres-
sable LBA sectors available
(see Section 2.2.3 for related
information)
ST380021A =156,301,488
ST360021A = 117,231,408
ST340016A = 78,165,360
ST320011A = 39,102,336
62 Retired
0000
H
63 Multiword DMA active and
modes supported (see note
following this table)
xx
07
H
64 Advanced PIO modes sup-
ported (modes 3 and 4 sup-
ported)
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)
00F0
H
Word Description Value