Hitachi travelstar hds723020bla642 Manual Do Utilizador

7K200 SATA OEM Specification 

109/173 

 

Command data structure:

 Data format of each command data structure is shown below. 

Description 

Bytes  Offset 

Device Control register 

1 

00h

Features register (7:0)    (see Note) 

1 

01h

Features register (15:8) 

1 

02h

Sector count register (7:0) 

1 

03h

Sector count register (15:8) 

1 

04h

Sector number register (7:0) 

1 

05h

Sector number register (15:8) 

1 

06h

Cylinder Low register (7:0) 

1 

07h

Cylinder Low register (15:8) 

1 

08h

Cylinder High register (7:0) 

1 

09h

Cylinder High register (15:8) 

1 

0Ah

Device register 

1 

0Bh

Command register 

1 

0Ch

Reserved 1 

0Dh

Timestamp (milliseconds from Power-on) 

4 

0Eh

 

18  

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 76 Command data structure 

Error data structure: 

Data format of error data structure is shown below. 

Description 

Bytes  Offset 

Reserved 1 

00h

Error register 

1 

01h

Sector count register (7:0)    (see Note) 

1 

02h

Sector count register (15:8)    (see Note) 

1 

03h

Sector number register (7:0) 

1 

04h

Sector number register (15:8) 

1 

05h

Cylinder Low register (7:0) 

1 

06h

Cylinder Low register (15:8) 

1 

07h

Cylinder High register (7:0) 

1 

08h

Cylinder High register (15:8) 

1 

09h

Device register 

1 

0Ah

Status register 

1 

0Bh

Extended error data (vendor specific) 

19 

0Ch

State 1 

1Fh

Life timestamp (hours) 

2 

20h

 

34  

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. 

Table 77 Error data structure