Extended Self-Test Log Sector - Hitachi HTS542525K9SA00 Specifications

Note: bits (7:0) refer to the contents if the register is read with bit 7 of the Device Control register cleared to zero.
Bits (15:8) refer to the contents if the register is read with bit 7 of the Device Control register set to one.
State shall contain a value indicating the state of the device when the command was issued to the device or the reset
occurred as described below.
12.17.2.4 Device error count
This field shall contain the total number of errors attributable to the device that have been reported by the device
during the life of the device. This count shall not include errors attributed to the receipt of faulty commands such as
commands codes not implemented by the device or requests with invalid parameters or invalid addresses. If the
maximum value for this field is reached the count shall remain at the maximum value when additional errors are
encountered and logged.

12.17.3 Extended Self-test log sector

The figure below defines the format of each of the sectors that comprise the Extended SMART self-test log.
The Extended SMART self-test log sector shall support 48-bit and 28-bit addressing. All 28-bit entries contained in
the SMART self-test log, defined in 11.42.6, "Self-test log data structure" on page0203, shall also be included in
the Extended SMART self-test log with all 48-bit entries.
Self-test log data structure revision number
Reserved
Self-test descriptor index (7:0)
Self-test descriptor index (15:8)
Descriptor entry 1
Descriptor entry 2
...
Descriptor entry 18
Vendor specific
Reserved
Data structure checksum
These descriptor entries are viewed as a circular buffer. The nineteenth self-test shall create a descriptor entry that
replaces descriptor entry 1. The next self-test after that shall create a descriptor entry that replaces descriptor entry
2, etc. All unused self-test descriptors shall be filled with zeros.
Value
x0h Unknown
x1h Sleep
x2h Standby
x3h Active/Idle
x4h SMART Off-line or Self-test
x5h-xAh Reserved
xBh-xFh Vendor specific
Description
Deskstar 7K160 Hard Disk Drive Specification
177
State
Bytes
1
1
1
1
26
25
26
2
11
1
512
Offset
00h
01h
02h
03h
04h
1Eh
1D8h
1F2h
1F4h
1FFh