Figure 87. Identify Device Information. (Part 2 Of 7) - Hitachi IC25N040ATCS04-0 - Travelstar 40GN 40GB UDMA/100 4200RPM 2MB 2.5" IDE Hard Drive Specifications

2.5 inch ata/ide
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Word
Content
48
0000H
49
0F00H
50
4000H
51
0200H
52
0200H
53
0007H
54
XXXXH
55
XXXXH
56
XXXXH
57-58
XXXXH
59
0XXXH
60-61
(Note 1)
62
0000H
63
XX07H
* in Content field indicates the use of those parameters that are vendor
specific.
Note 1. See Figure 93.

Figure 87. Identify device information. (Part 2 of 7)

Description
*
Capable of double word I/O, '0000'= cannot perform
Capabilities, bit assignments:
15-14(=0)
Reserved
13(=0)
Standby timer value are vendor specific
12(=0)
Reserved
11(=1)
IORDY Supported
10(=1)
IORDY can be disabled
9(=1)
Reserved
8(=0)
Reserved
7–0(=0)
Reserved
*
Capabilities
15(=0) 0=the contents of word 50 are valid
14(=1) 1=the contents of word 50 are valid
13- 1(=0) Reserved
0(=0) 1=the device has a minimum Standby timer
value that is device specific
*
PIO data transfer cycle timing mode
*
DMA data transfer cycle timing mode
Refer Word 62 and 63
Validity flag of the word
15- 3(=0)
Reserved
2(=1)
1=Word 88 is Valid
1(=1)
1=Word 64-70 are Valid
0(=1)
1=Word 54-58 are Valid
Number of current cylinders
Number of current heads
Number of current sectors per track
Current capacity in sectors
Word 57 specifies the low word of the capacity
Current Multiple setting. Bit assignments:
15- 9(=0)
Reserved
8
1= Multiple Sector Setting is Valid
7- 0
xxh = Current setting for number of sectors
Total Number of User Addressable Sectors
Word 60 specifies the low word of the number
*
Reserved
Multiword DMA Transfer Capability
15-11(=0)
Reserved
10
1=Multiword DMA mode 2 is selected
9
1=Multiword DMA mode 1 is selected
8
1=Multiword DMA mode 0 is selected
7- 3(=0)
Reserved
2
1=Multiword DMA mode 2 is supported
1
1=Multiword DMA mode 1 is supported
0
1=Multiword DMA mode 0 is supported
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
124

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