IBM DBCA-204860 Hard Drive Specifications - Page 116

Minimum PIO Transfer Cycle Time With IORDY Flow Control

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Word 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 Content Description 4000H 0200H 0200H * XXX7H XXXXH XXXXH XXXXH XXXXH 0XXXH Note.2 XX07H * XX07H 0003H 0078H 0078H 00F0H 0078H 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 70 xxh = Current setting for number of sectors Total Number of User Addressable Sectors Word 60 specifies the low word of the number Single Word DMA Transfer Capability 15 8 Single word DMA transfer mode active 7 0(=7) Single word DMA transfer modes supported (support mode 0,1 and 2) 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 0(=7) Multi word DMA transfer modes supported (support mode 0,1 and 2) Flow Control PIO Transfer Modes Supported 15 8(=0) Reserved 7 0(=3) Advanced PIO Transfer Modes Supported '11' = PIO Mode 3 and 4 Supported Minimum Multiword DMA Transfer Cycle Time Per Word 15 0(=78) Cycle time in nanoseconds (120ns, 16.6MB/s) Manufacturer's Recommended Multiword DMA Transfer Cycle Time 15 0(=78) Cycle time in nanoseconds (120ns, 16.6MB/s) Minimum PIO Transfer Cycle Time Without Flow Control 15 0(=F0) Cycle time in nanoseconds (240ns, 8.3MB/s) Minimum PIO Transfer Cycle Time With IORDY Flow Control 15 0(=78) Cycle time in nanoseconds (120ns, 16.6MB/s) Figure 67. Identify device information -- continued -- 108 OEM Specifications of DBCA-2xxxxx 2.5 inch H D D

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Word
Content
Description
50
4000H
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
51
0200H
PIO data transfer cycle timing mode
52
0200H
*
DMA data transfer cycle timing mode
Refer Word 62 and 63
53
XXX7H
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
54
XXXXH
Number of current cylinders
55
XXXXH
Number of current heads
56
XXXXH
Number of current sectors per track
57 58
XXXXH
Current capacity in sectors
Word 57 specifies the low word of the capacity
59
0XXXH
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
60 61
Note.2
Total Number of User Addressable Sectors
Word 60 specifies the low word of the number
62
XX07H
*
Single Word DMA Transfer Capability
15
8
Single word DMA transfer mode active
7
0(=7) Single word DMA transfer modes supported
(support mode 0,1 and 2)
63
XX07H
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
0(=7) Multi word DMA transfer modes supported
(support mode 0,1 and 2)
64
0003H
Flow Control PIO Transfer Modes Supported
15
8(=0) Reserved
7
0(=3) Advanced PIO Transfer Modes Supported
'11' = PIO Mode 3 and 4 Supported
65
0078H
Minimum Multiword DMA Transfer Cycle Time Per Word
15
0(=78) Cycle time in nanoseconds (120ns, 16.6MB/s)
66
0078H
Manufacturer's Recommended Multiword DMA Transfer Cycle
Time
15
0(=78) Cycle time in nanoseconds (120ns, 16.6MB/s)
67
00F0H
Minimum PIO Transfer Cycle Time Without Flow Control
15
0(=F0) Cycle time in nanoseconds (240ns, 8.3MB/s)
68
0078H
Minimum PIO Transfer Cycle Time With IORDY Flow Control
15
0(=78) Cycle time in nanoseconds (120ns, 16.6MB/s)
Figure 67. Identify device information
-- continued --
108
OEM Specifications of DBCA-2xxxxx 2.5 inch HDD