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-E280

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