Data Transferring Commands From Host To Device; Protocol For Command Abort - Fujitsu MPG3xxxAT Product Manual

Note:
For transfer of a sector of data, the host needs to read Status register (X'1F7') in order to clear
INTRQ (interrupt) signal. The Status register should be read within a period from the DRQ
setting by the device to starting of the sector data transfer. 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.
Parameter write
~
BSY
DRDY
DRQ
INTRQ
Data transfer
* The host should receive 512-byte dummy data or release the DRQ set state by resetting.
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.
FORMAT TRACK
WRITE SECTOR(S)
WRITE LONG
WRITE BUFFER
WRITE VERIFY
SECURITY DISABLE PASSWORD
SECURITY ERASE UNIT
SECURITY SET PASSWORD
SECURITY UNLOCK
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.
5 - 78
Command
Status read
Figure 5.3

Protocol for command abort

C141-E110-02EN
* Transfers dummy data