![](http://pdfasset.owneriq.net/2/0e/20e501aa-595c-46fe-bbac-2088887ceffe/20e501aa-595c-46fe-bbac-2088887ceffe-bgfd.png)
5.4 Command Protocol
C141-E262 5-175
5.4.1 Non-data command protocol
Execution of the following commands does not involve data transfer between the
host and the device.
• RECALIBRATE
• SEEK
• READ VERIFY SECTOR(S) (EXT)
• WRITE UNCORRECTABLE EXT
• EXECUTE DEVICE DIAGNOSTIC
• INITIALIZE DEVICE PARAMETERS
• SET FEATURES
• SET MULTIPLE MODE
• READ NATIVE MAX ADDRESS (EXT)
• SET MAX ADDRESS (EXT)
• SET MAX LOCK
• SET MAX FREEZE LOCK
• IDLE
• IDLE (UNLOAD) IMMEDIATE
• STANDBY
• STANDBY IMMEDIATE
• CHECK POWER MODE
• SMART DISABLE OPERATION
• SMART ENABLE/DISABLE AUTOSAVE
• SMART ENABLE OPERATION
• SMART EXECUTE OFFLINE IMMEDIATE
• SMART RETURN STATUS
• SECURITY ERASE PREPARE
• SECURITY FREEZE LOCK
• FLUSH CACHE (EXT)