Deskstar 7K160 Hard Disk Drive Specification
180
Table 110 defines the format of each entry in the Read Stream Error Log.
Table 104: Stream Error Log entry
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.
12.17.5 Write Stream Error Log
Table 111 defines the format of the Write Stream Error log. Entries are placed into the Write Stream Error log only
when the SE bit is set to one in the Status Register. The 512 bytes returned shall contain a maximum of 31 error
entries. The Write Stream Error Count shall contain the total number of Write Stream Errors detected since the last
successful completion of the Read Log Ext command with LBA Low register set to 21h. This error count may be
greater than 31, but only the most 31 errors are represented by entries in the log. If the Write Stream Error Count
reaches the maximum value that can be represented after the next error is detected the Write Stream Error Count
shall remain at the maximum value. After successful completion of a Read Log Ext command with the LBA Low
Register set to 21h, the Write Stream Error Log shall be reset to a power-on or hardware reset condition, with the
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
Summary of Contents for Deskstar 7K160
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Page 297: ...Write Buffer 249 Write cache function 93 Write Continuous bit 102 Write DRQ interval time 30 ...