Western Digital Ultrastar DC HC310 - Table 119 Identify Device Information -Continued

146
Western Digital Hard Disk Drive OEM Specification
Word
Content
Description
88
xx7FH
Ultra DMA Transfer modes
15- 8 (=xx)
Current active Ultra DMA transfer mode
15
Reserved (=0)
14
Mode 6
1 = Active
0 = Not Active
13
Mode 5
1 = Active
0 = Not Active
12
Mode 4
1 = Active
0 = Not Active
11
Mode 3
1 = Active
0 = Not Active
10
Mode 2
1 = Active
0 = Not Active
9
Mode 1
1 = Active
0 = Not Active
8
Mode 0
1 = Active
0 = Not Active
7- 0 (=7F)
Ultra DMA Transfer mode supported
7
Reserved (=0)
6
Mode 6
1 = Support
5
Mode 5
1 = Support
4
Mode 4
1 = Support
3
Mode 3
1 = Support
2
Mode 2
1 = Support
1
Mode 1
1 = Support
0
Mode 0
1 = Support
89
xxxxH
15
1=Extended Time is reported in bits 14:0
0=Time is reported in bits 7:0
If bit 15 is set to one
14:0
Time required for security erase unit completion
Time= value(xxxxh)*2 [minutes]
If bit 15 is set to zero
14:8
Reserved
7:0
Time required for security erase unit completion
Time= value(xxxxh)*2 [minutes]
90
xxxxH
15
1=Extended Time is reported in bits 14:0
0=Time is reported in bits 7:0
If bit 15 is set to one
14:0
Time required for Enhanced security erase completion
If bit 15 is set to zero
14:8
Reserved
7:0
Time required for Enhanced security erase completion
91
00FEH
Current Advanced power management value
92
FFFEH
Current Password Revision Code
93
0000H
COMRESET result
94
0000H
Reserved
95
xxxxH
Stream Minimum Request Size
Number of sectors that provides optimum performance in streaming environment. This
number shall be a power of two, with a minimum of eight sectors (4096 bytes). The
starting LBA value for each streaming command should be evenly divisible by this
request size.
96
xxxxH
Streaming Transfer Time – DMA
The worst-case sustainable transfer time per sector for the device is calculated as
follows:
Streaming Transfer Time = (word 96) * (words(99:98) / 65536)
If the Streaming Feature set is not supported by the device, the content of word 96 shall
be zero.
Table 119 Identify device information -Continued-