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C141-E124-01EN ix
CONTENTS
page
CHAPTER 1 COMMAND PROCESSING ..................................................................................1-1
1.1 Command Format .........................................................................................................1-1
1.2 Status Byte....................................................................................................................1-7
1.3 Outline of Command Processing...................................................................................1-10
1.3.1 Single commands..........................................................................................................1-10
1.3.2 Command link...............................................................................................................1-11
1.3.3 Disconnect/reconnect processing..................................................................................1-13
1.3.4 Synchronous mode data transfer/wide mode data transfer............................................1-17
1.4 Command Queuing Function ........................................................................................1-19
1.4.1 Untagged queuing.........................................................................................................1-19
1.4.2 Tagged queuing.............................................................................................................1-21
1.5 UNIT ATTENTION Condition ....................................................................................1-23
1.5.1 Generation of the UNIT ATTENTION condition ........................................................1-23
1.5.2 Response and Release Condition at UNIT ATTENTION Condition Hold State..........1-24
1.5.3 UNIT ATTENTION condition multiple hold...............................................................1-25
1.6 Sense Data Hold State...................................................................................................1-26
1.6.1 Sense data hold condition .............................................................................................1-26
1.6.2 Response and release conditions at sense data hold state .............................................1-27
1.7 Command Processing Exceptions.................................................................................1-28
1.7.1 Overlapping commands ................................................................................................1-28
1.7.2 Illegal LUN specification..............................................................................................1-29
1.7.3 Reserved operation code...............................................................................................1-29
1.7.4 Command processing in the not ready state..................................................................1-29
1.7.5 Error recovery processing.............................................................................................1-31
1.7.6 Reset processing ...........................................................................................................1-33
1.7.7 Fatal hardware errors....................................................................................................1-35
1.8 Data Block Addressing.................................................................................................1-36
1.8.1 Definition of data space................................................................................................1-36
1.8.2 Logical block addressing ..............................................................................................1-38
CHAPTER 2 DATA BUFFER MANAGEMENT ........................................................................2-1
2.1 Data Buffer ...................................................................................................................2-1
2.1.1 Data buffer configuration and basic operation..............................................................2-1