Fujitsu MHV2060AT User Manual

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5.4  Command Protocol
 
C141-E218 
5-131 
 
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. 
 
Figure 5.4  Protocol for command abort