Operations
6-16
C141-E050-02EN
−
READ MULTIPLE
−
WRITE SECTOR(S)
−
WRITE MULTIPLE
−
WRITE VERIFY SECTOR(S)
3)
Caching operation is inhibited by the SET FEATURES command.
4)
Issued command is terminated with an error.
5)
Soft reset or hard reset occurs, or power is turned off.
6)
The device enters the sleep mode.
7)
Under the state that the write data is kept in the data buffer for write
command as a caching data, new write command is issued. (write data kept
until now are invalidated)
6.5.3 Usage of read segment
This subsection explains the usage of the read segment buffer at following cases.
6.5.3.1 Mis-hit (no hit)
A lead block of the read-requested data is not stored in the data buffer. The
requested data is read from the disk media.
The read-ahead operation is performed only when the last sector address of the
previous read command and the lead sector address of this read command is
sequential (see item (2)).
1)
Sets the host address pointer (HAP) and the disk address pointer (DAP) to the
lead of segment.
Segment only for read
DAP
HAP
Summary of Contents for MHC2032AT
Page 1: ...C141 E050 02EN MHC2032AT MHC2040AT MHD2032AT MHD2021AT DISK DRIVES PRODUCT MANUAL ...
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Page 38: ...3 2 Mounting C141 E050 02EN 3 3 Figure 3 1 Dimensions MHD series 2 2 ...
Page 48: ...3 4 Jumper Settings C141 E050 02EN 3 13 Figure 3 14 Example 2 of Cable Select ...
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Page 54: ...4 3 Circuit Configuration C141 E050 02EN 4 5 Figure 4 2 Circuit Configuration ...
Page 60: ...4 6 Read write Circuit C141 E050 02EN 4 11 Figure 4 4 Read write circuit block diagram ...
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Page 164: ...5 6 Timing C141 E050 02EN 5 93 Figure 5 10 Data transfer timing ...
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