Sony SDX-800V/R User Manual

 

SONY AIT-3Ex drive SDX-800V series Ver.1.1 

 

6-77 

Operation Code (1Ch) 

Obsolete Reserved 

Reserved 

(MSB) Allocation 

Length 

 

  

(LSB) 

Control 

RECEIVE DIAGNOSTIC RESULTS requests error analysis data be sent to the initiator after completion of a SEND 
DIAGNOSTIC command. 

Allocation Length: This field specifies the number of bytes that the initiator has allocated for returned diagnostic 

data. An Allocation Length of ZERO means that no diagnostic data will be transferred. Any other value indicates the 

maximum number of bytes that will be transferred. 

If the SEND DIAGNOSTIC had the PF bit set, the drive returns four bytes of header data as will as eight bytes of the 

diagnostic result. If the PF bit was not set, the drive returns only the eight bytes of the diagnostic result. 

The drive terminates the DATA IN phase when Allocation Length bytes have been transferred or when all the 

available diagnostic data (four or eight bytes depending on the PF bit) have been transferred to the initiator, 

whichever, is less. 

If the drive returns a CHECK CONDITION status with the HARDWARE ERROR Sense Key and an Additional Sense 

Code of DIAGNOSTIC FAILURE set on completion of a SEND DIAGNOSTIC, then the Host should issue a 

RECEIVE DIAGNOSTIC RESULTS command to receive the eight bytes of data indicating the actual failure and the 
Most Suspect Unit (MSU).  

If the Host issued a SEND DIAGNOSTIC with the PF bit set and a page Code of ZERO, the drive returns which 

pages it supports in the following format: 

Page Code (00h) 

Reserved 

(MSB) 

 

Page Length (00 02h) 

 

  

(LSB) 

Supported Page Code (00h) 

Supported Page Code (81h) 

If the Host issued a SEND DIAGNOSTIC with the PF bit set and a Page Code of 81h, the drive returns the following 

four bytes of page header, then five bytes of diagnostic results. 

Page Code (81h) 

Reserved 

(MSB) 

Page Length (00 05h) 

 

  

(LSB) 

The structure of the diagnostic results data is described below: