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

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-E249

6-15

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Fujitsu MHW2080BS, MHW2100BS, MHW2120BS, MHW2040BS, MHW2060BS manual Invalidating caching-target data