Deskstar T7K500 Hard Disk Drive Specification
121
6
Byte
Max Op Limit
Maximum recommended continuous operating
temperature. This is a one byte 2’s complement
number that allows a range from -127°C to
+127°C to be specified. 80h is an invalid value.
This is a fixed value.
7
Byte
Over Limit
Maximum temperature limit. This is a one byte
2's complement number that allows a range from
-127°C to +127°C to be specified. 80h is an
invalid value. This is a fixed value.
8
Byte
Over Limit
Minimum recommended continuous operating
limit. This is a one byte 2's complement number
that allows a range from -127°C to +127°C to be
specified. 80h is an invalid value. This is a fixed
value.
9
Byte
Under Limit
Minimum temperature limit. This is a one byte
2's complement number that allows a range from
-127°C to +127°C to be specified. 80h is an
invalid value. This is a fixed value.
29:10
Byte[20]
Reserved
31:30
Word
Queue Size
Number of entry locations in history queue. This
value is 128.
33:32
Word
Queue Index
Last updated entry in queue. Queue Index is
zero-based, so Queue Index 0000h is the first
location in the buffer (at offset 34). The most
recent temperature entered in the buffer is at
Queue Index + 34.See Note 1 and Note 2.
(Queue Size+33):34 Byte[Queue Size]
Queue Buffer
This is a circular buffer of absolute HDA Tem-
perature values. These are one byte 2's comple-
ment numbers, which allow a range from -127°C
to +127°C to be specified. A value of 80h indi-
cates an initial value or a discontinuity in temper-
ature recording. The Actual time between
samples may vary because commands may not be
interrupted. The sampling period is the minimum
time between samples. See Not 1.If the host
changes the logging interval using the volatile
option, the interval between entries in the queue
may change between power cycles with no indi-
cation to the host.
511:(Queue Size
+34)
Byte [512-Queue
Size-34]
Reserved
Summary of Contents for Deskstar T7K500
Page 2: ......
Page 18: ...Deskstar T7K500 Hard Disk Drive Specification 4 ...
Page 20: ...Deskstar T7K500 Hard Disk Drive Specification 6 ...
Page 21: ...Deskstar T7K500 Hard Disk Drive specification 7 Part 1 Functional specification ...
Page 22: ...Deskstar T7K500 Hard Disk Drive Specification 8 ...
Page 24: ...Deskstar T7K500 Hard Disk Drive Specification 10 ...
Page 34: ...Deskstar T7K500 Hard Disk Drive Specification 20 ...
Page 55: ...Deskstar T7K500 Hard Disk Drive Specification 41 Part 2 Interface specification ...
Page 56: ...Deskstar T7K500 Hard Disk Drive Specification 42 ...
Page 80: ...Deskstar T7K500 Hard Disk Drive Specification 66 ...
Page 82: ...Deskstar T7K500 Hard Disk Drive Specification 68 ...
Page 90: ...Deskstar T7K500 Hard Disk Drive Specification 76 ...
Page 142: ...Deskstar T7K500 Hard Disk Drive Specification 128 ...