Hitachi HUS154530VLF400 User Manual

Page of 417
Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
267  
19.40.3  Send Diagnostic Page A0h
The Device LED Control Page A0h allows the initiator to turn on or off the device fault LED light. 
Table 227: Device LED Control Page - Send Diagnostic
The page begins with a four-byte page header which specifies the page code and length. A SBDL (Set Bad Device Light) bit of 
one turns the device LED on, zero turns the device LED off. If the target detects an error in the passed parameter data it shall 
terminate the command with CHECK CONDITIONS Status. The sense key shall be set to Illegal Request and the Additional 
Sense code set to Illegal Field in CDB. 
Byte
Bit
7
6
5
4
3
2
1
0
0
   Page Code = A0h
1
Reserved = 0
2-3
(MSB)
     Page Length = 0002h
(LSB)
4
Reserved = 0
5
Reserved = 0
SBDL