5.4 Command Protocol
C141-E104-02EN 5-87
Note that the host does not need to read the Status register for the
reading of a single sector or the last sector in multiple-sector
reading. If the timing to read the Status register does not meet
above condition, normal data transfer operation is not guaranteed.
When the host new command even if the device requests the data
transfer (setting in DRQ bit), the correct device operation is not
guaranteed.
Figure 5.4 Protocol for command abort
5.4.2 Data transferring commands from host to device
The execution of the following commands involves Data transfer from the host to
the drive.
• WRITE SECTOR(S)
• WRITE LONG
• WRITE BUFFER
• WRITE VERIFY
• SECURITY DISABLE PASSWORD
• SECURITY ERASE UNIT
• SECURITY SET PASSWORD
• SECURITY UNCLOK
The execution of these commands includes the transfer one or more sectors of
data from the host to the device. In the WRITE LONG command, 516 bytes are
transferred. Following shows the protocol outline.