Текст страницы
Table 151 Read Stream Error Log
Description
Bytes
Offset
Structure Version
1
00h
Error Log Index
1
01h
Read Stream Error Log Count
2
02h
Reserved
12
04h
Read Stream Error Log Entry #1
16
10h
Read Stream Error Log Entry #2
16
20h
...
Read Stream Error Log Entry #31
16
1F0h
512
The Data Structure Version field shall contain a value of 02h indicating the second revision of the structure format.
The Read Stream Error Log Count field shall contain the number of uncorrected sector entries currently reportable to
the host. This value may exceed 31.
The Error Log Index indicates the error log data structure representing the most recent error. Only values (31:1) are
valid.
Table 152 Stream Error Log entry
Description
Bytes
Offset
Feature Register Contents Value (current)
1
00h
Feature Register Contents Value (previous)
1
01h
Status Register Contents Value
1
02h
Error Register Contents Value
1
03h
LBA (7:0)
1
04h
LBA (15:8)
1
05h
LBA (23:16)
1
06h
LBA (31:24)
1
07h
LBA (39:32)
1
08h
LBA (47:40)
1
09h
Reserved
2
0A-0Bh
Sector Count (LSB)
1
0Ch
Sector Count (MSB)
1
0Dh
Reserved
2
0E-0Fh
Byte (1:0) contains the contents of the Feature Register when the error occurred. This Value shall be set to 0FFFFh
for s deferred write error.
Byte 2 contains the contents of the Status Register when the error occurred.
Byte 3 contains the contents of the Error Register when the error occurred.
Byte (9:4) indicates the starting LBA of the error.
Byte (13:12) indicate the length of the error. Therefore, each entry may describe a range of sectors at the given
address and spanning the specified number of sectors.
12.21.14 Current Device Internal Status Data log (log page 24h)
The Current Device Internal Status Data log consists of the Current Device Internal Status Data header page (i.e.,
log page 0) (see Section 12.21.14.1); and zero or more Current Device Internal Status Data pages (i.e., log pages
1..n) (see Section 12.21.14.2).
There are 3 conditions of the number of log pages indicated in the General Purpose Log Directory (i.e., log 00h).
They may change as a result of processing a power on reset; or a download microcode activation; or shall not change
218
Hard Disk Drive Specification