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Information Technology

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Book Id: WPLBN0000658403
Format Type: PDF eBook
File Size: 1.43 MB.
Reproduction Date: 2005
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Title: Information Technology  
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Language: English
Subject: Technology., Reference materials, Technology and literature
Collections: Techonology eBook Collection
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Information Technology. (n.d.). Information Technology. Retrieved from http://hawaiilibrary.net/


Description
Technical Reference Publication

Excerpt
Foreword: (This foreword is not part of American National Standard X3. -199 .) This AT Attachment with Packet Interface Extension (ATA/ATAPI-4) standard is designed to maintain a high degree of compatibility with the AT Attachment-3 Interface (ATA-3) standard and the packet command feature set implemented by devices commonly known as ATAPI devices while providing the advantages of additional features and functions. This standard was developed by the ATA ad hoc working group of Accredited Standards Committee NCITS during 1995-97. The standards approval process started in 1997. This document includes annexes that are informative and are not considered part of the standard. Requests for interpretation, suggestions for improvement and addenda, or defect reports are welcome. They should be sent to the NCITS Secretariat, Information Technology Industry Council.

Table of Contents
Contents Page Foreword ............................................................................................................................................v Introduction ........................................................................................................................................ix 1 Scope..............................................................................................................................................1 2 Normative references .......................................................................................................................2 2.1 Approved references...............................................................................................................2 2.2 References under development ..............................................................................................2 2.3 Other references.....................................................................................................................2 3 Definitions, abbreviations, and conventions ......................................................................................3 3.1 Definitions and abbreviations ..................................................................................................3 3.2 Conventions...........................................................................................................................5 4 Interface physical and electrical requirements ...................................................................................9 4.1 Cable configuration .................................................................................................................9 4.2 I/O cable ................................................................................................................................10 4.3 Electrical characteristics .........................................................................................................10 5 Interface signal assignments and descriptions ..................................................................................13 5.1 Signal summary ......................................................................................................................13 5.2 Signal descriptions..................................................................................................................14 6 General operational requirements .....................................................................................................19 6.1 Command delivery ..................................................................................................................19 6.2 Register delivered data transfer command sector addressing .................................................19 6.3 General feature set .................................................................................................................21 6.4 Ultra DMA feature set .............................................................................................................22 6.5 PACKET Command feature set ..............................................................................................24 6.6 Overlapped feature set ...........................................................................................................25 6.7 Queued feature set .................................................................................................................26 6.8 Power Management feature set ..............................................................................................27 6.9 Advanced Power Management feature set..............................................................................29 6.10 Security Mode feature set .....................................................................................................30 6.11 Self-monitoring, analysis, and reporting technology feature set .............................................34 6.12 Host Protected Area feature set ............................................................................................35 6.13 CFA feature Set ....................................................................................................................36 6.14 Removable Media Status Notification and Removable Media feature sets ............................37 7 Interface register definitions and descriptions ...................................................................................39 7.1 Device addressing considerations ...........................................................................................39 7.2 I/O register descriptions ..........................................................................................................39 7.3 Alternate Status register..........................................................................................................41 7.4 Command register ..................................................................................................................41 7.5 Cylinder High register .............................................................................................................42 7.6 Cylinder Low register ..............................................................................................................42 7.7 Data register ...........................................................................................................................43 7.8 Data port................................................................................................................................43 7.9 Device Control register ...........................................................................................................44 7.10 Device/Head register ............................................................................................................45 7.11 Error register........................................................................................................................46 7.12 Features register...................................................................................................................46 7.13 Sector Count register ............................................................................................................47 7.14 Sector Number register .........................................................................................................47 7.15 Status register.......................................................................................................................48 8 Command descriptions .....................................................................................................................52 8.1 CFA ERASE SECTORS .........................................................................................................54 8.2 CFA REQUEST EXTENDED ERROR CODE .........................................................................56

 

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