Datasheet

Z5K500 OEM Specifications
109
14.17.4 Command Error
The following table defines the format of the Command Error data structure.
Byte 7 6 5 4 3 2 1 0
0 NQ Rsv Rsv TAG
1 Reserved
2 Status
3 Error
4 LBA Low
5 LBA Mid
6 LBA High
7 Device
8 LBA Low Previous
9 LBA Mid Previous
10 LBA High Previous
11 Reserved
12 Sector Count
13 Sector Count Previous
14 – 255 Reserved
256 – 510 Vendor Unique
511 Data Structure Checksum
Table 81 Command Error information
The TAG field (Byte 0 bits 4-0) contains the tag number corresponding to a queued command, if the NQ
bit is cleared.
The NQ field (Byte 0 bit 7) indicates whether the error condition was a result of a non-queued or not. If it
is cleared, the error information corresponds to a queued command specified by the tag number indicated
in the TAG field.
The bytes 1 to 13 correspond to the contents of Shadow Register Block when the error was reported.
The Data Structure Checksum (Byte 511) contains the 2’s complement of the sum of the first 511 bytes in
the data structure. The sum of all 512 bytes of the data structure will be zero when the checksum is
correct.