Serial ATA 串行协议介绍

TABLE OF CONTENTS 1 Scope ...........................................................................................................................11 2 Goals, objecTIves and migraTIon consideraTIons ...............................................................11 2.1 Goals and objecTIves ..............................................................................................11 2.2 Migration Considerations ........................................................................................12 3 Normative references ....................................................................................................13 3.1 Approved references ..............................................................................................13 3.2 Other references ....................................................................................................13 4 Definitions, abbreviations, and conventions .....................................................................13 4.1 Definitions and abbreviations ..................................................................................13 4.1.1 ATA (AT Attachment)......................................................................................13 4.1.2 ATAPI (AT Attachment Packet Interface) device ...............................................13 4.1.3 backchannel ...................................................................................................14 4.1.4 bit synchronization ..........................................................................................14 4.1.5 byte ...............................................................................................................14 4.1.6 character........................................................................................................14 4.1.7 character alignment ........................................................................................14 4.1.8 character slipping ...........................................................................................14 4.1.9 code violation .................................................................................................14 4.1.10 comma character ............................................................................................14 4.1.11 comma sequence ...........................................................................................14 4.1.12 command aborted...........................................................................................15 4.1.13 command completion......................................................................................15 4.1.14 command packet ............................................................................................15 4.1.15 Control Block registers ....................................................................................15 4.1.16 control character .............................................................................................15 4.1.17 control variable ...............................................................................................15 4.1.18 CRC ..............................................................................................................15 4.1.19 data character ................................................................................................15 4.1.20 device............................................................................................................15 4.1.21 DMA (direct memory access)...........................................................................15 4.1.22 Dword............................................................................................................16 4.1.23 Dword synchronization ....................................................................................16 4.1.24 encoded character ..........................................................................................16 4.1.25 elasticity buffer ...............................................................................................16 4.1.26 First-party DMA access...................................................................................16 4.1.27 First-party DMA mode .....................................................................................16 4.1.28 FIS ................................................................................................................16 4.1.29 Frame Information Structure............................................................................16 4.1.30 frame .............................................................................................................16 4.1.31 interrupt pending.............................................................................................17 4.1.32 legacy device .................................................................................................17 4.1.33 legacy mode...................................................................................................17 4.1.34 legal character ................................................................................................17 4.1.35 LFSR .............................................................................................................17 4.1.36 PIO (programmed input/output) .......................................................................17 4.1.37 primitive .........................................................................................................17 4.1.38 sector.............................................................................................................17 4.1.39 Shadow Register Block registers .....................................................................17 4.1.40 unrecoverable error.........................................................................................17 4.1.41 word ..............................................................................................................17 4.2 Conventions ..........................................................................................................18 4.2.1 Precedence....................................................................................................18 4.2.2 Keywords .......................................................................................................18