Computer Drive User Manual

Contents
(47) WRITE LOG EXT (X’3F’) [Optional command
(Customize)] ................................................................................ 5-122
(48) READ VERIFY SECTOR(S) EXT (X’42): Option
(customizing)............................................................................... 5-124
(49) WRITE MULTIPLE FUA EXT (X’CE’): Option
(customizing)............................................................................... 5-125
(50) FLUSH CACHE EXT (X’EA’): Option (customizing)............. 5-126
5.3.3 Error posting........................................................................................5-127
5.4 Command Protocol......................................................................................... 5-129
5.4.1 PIO Data transferring commands from device to host ........................ 5-129
5.4.2 PIO Data transferring commands from host to device ........................ 5-132
5.4.3 Commands without data transfer......................................................... 5-134
5.4.4 Other commands..................................................................................5-135
5.4.5 DMA data transfer commands............................................................. 5-135
5.5 Ultra DMA Feature Set ..................................................................................5-137
5.5.1 Overview .............................................................................................5-137
5.5.2 Phases of operation..............................................................................5-138
5.5.3 Ultra DMA data in commands.............................................................5-138
5.5.4 Ultra DMA data out commands...........................................................5-143
5.5.5 Ultra DMA CRC rules......................................................................... 5-147
5.5.6 Series termination required for Ultra DMA ........................................5-148
5.6 Timing ............................................................................................................ 5-149
5.6.1 PIO data transfer..................................................................................5-149
5.6.2 Multiword data transfer ....................................................................... 5-150
5.6.3 Ultra DMA data transfer...................................................................... 5-151
5.6.4 Power-on and reset .............................................................................. 5-164
CHAPTER 6 Operations ................................................................................. 6-1
6.1 Device Response to the Reset............................................................................. 6-2
6.1.1 Response to power-on ............................................................................. 6-2
6.1.2 Response to hardware reset .....................................................................6-3
6.1.3 Response to software reset ...................................................................... 6-5
6.1.4 Response to diagnostic command............................................................6-6
6.2 Power Save .........................................................................................................6-7
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