Fujitsu MAA3182FC Series Manual page 14

1.13 Dual Loop ...................................................................................................................... 1-80
CHAPTER 2 COMMAND PROCESSING..................................................................... 2-1
2.1 Command Format .......................................................................................................... 2-1
2.2 Status Byte ..................................................................................................................... 2-6
2.3 Outline of Command Processing.................................................................................... 2-8
2.3.1 Single commands ........................................................................................................... 2-8
2.3.2 Command link................................................................................................................ 2-14
2.4 Command Queuing Function ......................................................................................... 2-15
2.4.1 Untagged queuing .......................................................................................................... 2-15
2.4.2 Tagged queuing.............................................................................................................. 2-15
2.5 UNIT ATTENTION Condition ...................................................................................... 2-17
2.5.1 Generation of the UNIT ATTENTION condition .......................................................... 2-17
2.5.2 Response and Release Condition at UNIT ATTENTION Condition Hold State............ 2-17
2.5.3 UNIT ATTENTION condition multiple hold................................................................. 2-18
2.6 Sense Data Hold State .................................................................................................... 2-19
2.7 Command Processing Exceptions .................................................................................. 2-19
2.7.1 Overlapping commands ................................................................................................. 2-19
2.7.2 Illegal LUN specification ............................................................................................... 2-20
2.7.3 Reserved operation code ................................................................................................ 2-20
2.7.4 Command processing in the not ready state ................................................................... 2-20
2.7.5 Error recovery processing .............................................................................................. 2-22
2.7.6 Reset processing............................................................................................................. 2-23
2.7.7 Fatal hardware errors...................................................................................................... 2-26
2.8 Data Block Addressing .................................................................................................. 2-27
2.8.1 Definition of data space.................................................................................................. 2-27
2.8.2 Logical block addressing................................................................................................ 2-29
CHAPTER 3 DATA BUFFER MANAGEMENT........................................................... 3-1
3.1 Data Buffer .................................................................................................................... 3-1
3.1.1 Data buffer configuration and basic operation ............................................................... 3-1
3.1.2 Operation mode setting .................................................................................................. 3-5
3.2 Look-Ahead Cache Feature............................................................................................ 3-7
3.2.1 Caching operation .......................................................................................................... 3-7
3.2.2 Caching parameters........................................................................................................ 3-9
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