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(46) WRITE LOG EXT (X'3F') .......................................................... 5-158
(47) READ VERIFY SECTOR (S) EXT (X’42’).............................. 5-162
(48) FLUSH CACHE EXT (X’EA’) ................................................. 5-163
(49) WRITE MULTIPLE FUA EXT (X'CE')..................................... 5-164
(50) WRITE DMA FUA EXT (X'3D') ............................................... 5-165
(51) READ FP DMA QUEUED (X'60') ............................................. 5-166
(52) WRITE FP DMA QUEUED (X'61') ........................................... 5-167
5.3.3 Error posting ..................................................................................... 5-168
5.4 Command Protocol........................................................................................ 5-170
5.4.1 Non-data command protocol............................................................. 5-170
5.4.2 PIO data-in command protocol.........................................................5-172
5.4.3 PIO data-out command protocol.......................................................5-173
5.4.4 DMA data-in command protocol ...................................................... 5-175
5.4.5 DMA data-out command protocol .................................................... 5-176
5.4.6 Native Command Queuing protocol ................................................. 5-177
5.5 Power-on and COMRESET .......................................................................... 5-180
CHAPTER 6 Operations................................................................................. 6-1
6.1 Reset and Diagnosis .......................................................................................... 6-2
6.1.1 Response to power-on........................................................................... 6-2
6.1.2 Response to COMRESET..................................................................... 6-4
6.1.3 Response to a software reset ................................................................. 6-7
6.2 Power Save........................................................................................................ 6-8
6.2.1 Power save mode .................................................................................. 6-8
6.2.2 Power commands ................................................................................ 6-10
6.3 Power Save Controlled by Interface Power Management (IPM)....................6-11
6.3.1 Power save mode of the interface ....................................................... 6-11
6.4 Read-ahead Cache ........................................................................................... 6-13
6.4.1 Data buffer structure ........................................................................... 6-13
6.4.2 Caching operation ............................................................................... 6-14
6.4.3 Using the read segment buffer ............................................................ 6-16
6.5 Write Cache..................................................................................................... 6-20
C141-E249 xiii