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Contents
C141-E221 xiii
(45) WRITE MULTIPLE EXT (X’39’): Option (customizing)........5-120
(46) WRITE DMA FUA EXT (X’3D’): Option (customizing) ........5-121
(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
5.5.3.1 Initiating an Ultra DMA data in burst......................................5-138
5.5.3.2 The data in transfer ..................................................................5-139
5.5.3.3 Pausing an Ultra DMA data in burst........................................5-139
5.5.3.4 Terminating an Ultra DMA data in burst.................................5-140
5.5.4 Ultra DMA data out commands ..........................................................5-143
5.5.4.1 Initiating an Ultra DMA data out burst....................................5-143
5.5.4.2 The data out transfer ................................................................5-144
5.5.4.3 Pausing an Ultra DMA data out burst......................................5-144
5.5.4.4 Terminating an Ultra DMA data out burst...............................5-145
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