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5-32 Maxtor Atlas 10K V
5.11.2 LOG SENSE Log Pages
The log pages that are returned from the drive have a common format that is shown
in Table 5-43. Each page contains a 4-byte header followed by one or more log
parameters. Refer to Table 5-44. Table 5-45 contains the format for the Generic Log
Parameter and Table 5-46 describes the fields.
Table 5-43 LOG SENSE Log Page Format-Data Format
Note:
1
Length x or y is the sum of parameter header and parameter data
value bytes.
Table 5-44 LOG SENSE Log Page Format-Field Descriptions
Table 5-45 Generic Log Parameter-Data Format
Bit
Byte
7654321 0
0 Reserved Page Code
1 Reserved
2 – 3 Page Length (n-3)
4 to
x+3
Log Parameter (first)
(length x)
1
n-y+1
to n
Log Parameter (last)
(length y)
1
Field Description
Page Code The page code as given in Table 5-39.
Page Length
The allocation length for the page minus the
4-byte header.
Log Parameter
One or more log data entities that are returned as par of
a Log Page. Each Log Parameter starts with a 4-byte
header followed by one or more bytes of value data. In
most cases, the parameter value is a 4-byte longword
that contains the present value of an error or perfor-
mance counter. See Table 5-45 for the format of a
generic log parameter.
Bit
Byte
76543210
0 – 1 Parameter Code
2 DU DS TSD ETC TMC LBIN LP
3 Page Length (n-3)
4 – n Parameter Value