6.4 Read-ahead Cache
(3) Invalidating caching-target data
Data that is a target of caching on the data buffer is invalidated under the
following conditions:
1)-1 Any command other than the following commands is issued. (All caching-
target data is invalidated.)
READ BUFFER
WRITE BUFFER
RECALIBRATE
FORMAT TRACK
SET FEATURES
SECURITY ERASE UNIT
DEVICE CONFIGURATION
DOWNLOAD MICROCODE
WRITE UNCORRECTABLE EXT
READ LOG (DMA) EXT
WRITE LOG (DMA) EXT
UNSUPPORT COMMAND (INVALID COMMAND)
1)-2 Commands that partially invalidate caching data
READ DMA/READ MULTIPLE/READ SECTOR(S)
READ DMA EXT/READ MULTIPLE EXT/READ SECTOR(S) EXT
READ FP DMA QUEUED
WRITE DMA/WRITE MULTIPLE/WRITE SECTOR(S)
WRITE DMA EXT/WRITE MULTIPLE EXT/WRITE SECTOR(S) EXT
WRITE DMA FUA EXT/WRITE MULTIPLE FUA EXT
WRITE FP DMA QUEUED
SMART
2) A COMRESET is issued or the power is turned off.
3) When HOST CRC ERROR has occurred.
C141-E259
6-15
Summary of Contents for MHW2080BJ
Page 1: ...C141 E259 01EN MHW2160BJ MHW2120BJ MHW2080BJ DISK DRIVES PRODUCT MAINTENANCE MANUAL ...
Page 4: ...This page is intentionally left blank ...
Page 12: ...This page is intentionally left blank ...
Page 19: ...Contents Glossary GL 1 Acronyms and Abbreviations AB 1 Index IN 1 C141 E259 xv ...
Page 24: ...This page is intentionally left blank ...
Page 44: ...This page is intentionally left blank ...
Page 56: ...This page is intentionally left blank ...
Page 76: ...This page is intentionally left blank ...
Page 264: ...This page is intentionally left blank ...
Page 286: ...This page is intentionally left blank ...
Page 302: ...This page is intentionally left blank ...
Page 306: ...This page is intentionally left blank ...
Page 308: ...This page is intentionally left blank ...
Page 316: ...This page is intentionally left blank ...
Page 318: ......
Page 319: ......
Page 320: ......