![](http://pdfasset.owneriq.net/3/9d/39dc3b9a-b9f1-4566-8866-92971d1c77d5/39dc3b9a-b9f1-4566-8866-92971d1c77d5-bgf7.png)
5.4 Command Protocol
Device
Host
RegHD
PIO Setup
DATA
Figure 5.14 PIO data-in command protocol
5.4.3 PIO data-out command protocol
Execution of the following commands involves data transfers from the host system
to the device:
• WRITE SECTOR(S) (EXT)
• WRITE MULTI (EXT) (FUA EXT)
• WRITE BUFFER
• WRITE VERIFY
• SMART WRITE LOG SECTOR
• SECURITY DISABLE PASSWORD
• SECURITY UNLOCK
• DEVICE CONFIGRATION SET
• SECURITY ERASE UNIT
• SECURITY SET PASSWORD
• DOWNLOAD MICROCODE
• WRITE LOG EXT
Data of one or more sectors is transferred from the host to the device.
C141-E249 5-173