5.3 Host Commands
C141-E192-01EN 5-21
final partial block is transferred. The number of sectors in the partial block to be
transferred is n where n = remainder of (“number of sectors”/”block count”).
If the READ MULTIPLE command is issued before the SET MULTIPLE MODE
command is executed or when the READ MULTIPLE command is disabled, the
device rejects the READ MULTIPLE command with an ABORTED COMMAND
error.
Figure 5.2 shows an example of the execution of the READ MULTIPLE
command.
•
Block count specified by SET MULTIPLE MODE command = 4 (number of
sectors in a block)
•
READ MULTIPLE command specifies;
Number of requested sectors = 9 (Sector Count register = 9)
Figure 5.2 Execution example of READ MULTIPLE command
At command issuance (I/O registers setting contents)
1F7
H
(CM) 11000100
1F6
H
(DH) x L x DV Start head No. / LBA
[MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
Start cylinder No. [MSB] / LBA
Start cylinder No. [LSB] / LBA
Start sector No. / LBA [LSB]
Transfer sector count
xx
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