Deskstar 7K160 Hard Disk Drive Specification
124
6Byte
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.
7Byte
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.
8Byte
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.
9Byte
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
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