28 Momentus 7200.3 SATA Product Manual, Rev. C27–46 Drive model number: (40 ASCII characters, padded with
blanks to end of string)
ST9320421AS
ST9320421ASG
ST9250421AS
ST9250421ASG
ST9200421AS
ST9200423ASG
ST9160411AS
ST9160411ASG
ST9120411AS
ST9120411ASG
ST980411AS
ST980411ASG
47 (Bits 7–0) Maximum sectors per interru pt on Read multiple
and Write multiple (16)
8010H
48 Reserved 0000H
49 Standard Standby timer, IORDY supported and may be dis-
abled
2F00H
50 ATA-reserved 0000H
51 PIO data-transfer cycle timing mode 0200H
52 Retired 0200H
53 Words 54–58, 64–70 and 88 are valid 0007H
54 Number of current logical cylinders xxxxH
55 Number of current logical heads xxxxH
56 Number of current logical sectors per logical track xxxxH
57–58 Current capacity in sectors xxxxH
59 Number of sectors transferred during a Read Multip le or
Write Multiple command
xxxxH
60–61 Total number of user-addressable sectors
This field contains a value that is one greater than the total
number of user-addressable sectors. The maximum value
that shall be placed in this field is 0FFFFFFFh. The
0FFFFFFFh value applies to all capacities over 137Gbytes
(see Section 2.2 and 2.3 for related information).
ST9320421AS = 0FFFFFFFh
ST9320421ASG = 0FFFFFFFh
ST9250421AS = 0FFFFFFFh
ST9250421ASG = 0FFFFFFFh
ST9200421AS = 0FFFFFFFh
ST9200423ASG = 0FFFFFFFh
ST9160411AS = 0FFFFFFFh
ST9160411ASG = 0FFFFFFFh
ST9120411AS = 234,441,648
ST9120411ASG = 234,441,648
ST980411AS = 156,301,488
ST980411ASG = 156,301,488
62 Retired 0000H
63 Multiword DMA active and modes supp orted
(see note following this table)
xx07H
64 Advanced PIO modes su pported (modes 3 and 4 supported) 0003H
65 Minimum multiword DMA transfer cycle time per word
(120 nsec)
0078H
66 Recommended multiword DMA tran sfer cycle time per word
(120 nsec)
0078H
67 Minimum PIO cycle time without IORDY flow control
(240 nsec)
00F0H
68 Minimum PIO cycle time with IORDY fl ow control (120 nsec) 0078 H
Word Description Value