Table 100 Extended Error Log Data Structure; Table 101 Command Data Structure - Hitachi HDS723020BLA642 Specifications

Description
1st command data structure
2nd command data structure
3rd command data structure
4th command data structure
5th command data structure
Error data structure

Table 100 Extended Error log data structure

Command data structure: Data format of each command data structure is shown below.
Description
Device Control register
Features register (7:0) (see Note)
Features register (15:8)
Sector count register (7:0)
Sector count register (15:8)
Sector number register (7:0)
Sector number register (15:8)
Cylinder Low register (7:0)
Cylinder Low register (15:8)
Cylinder High register (7:0)
Cylinder High register (15:8)
Device/Head register
Command register
Reserved
Timestamp (milliseconds from Power-on)
Note: bits (7:0) refer to the most recently written contents of the register. Bits (15:8) refer to the
contents of the register prior to the most recent write to the register.

Table 101 Command data structure

Hitachi hard disk drive specifications
152
Bytes Offset
18 00h
18 12h
18 24h
18 36h
18 48h
34 5Ah
124
Bytes Offset
1 00h
1 01h
1 02h
1 03h
1 04h
1 05h
1 06h
1 07h
1 08h
1 09h
1 0Ah
1 0Bh
1 0Ch
1 0Dh
4 0Eh
18