USB OHCI协议中英文版

avyeh

目录：

1. INTRODUCTION......................................................................................................... 1
2. TERMS AND ABBREVIATIONS................................................................................. 2
3. ARCHITECTURAL OVERVIEW.................................................................................. 6
3.1 Introduction.......................................................................................................... 6
3.2 Data Transfer Types............................................................................................ 7
3.3 Host Controller Interface..................................................................................... 7
3.3.1 Communication Channels............................................................................................7
3.3.2 Data Structures ...........................................................................................................8
3.4 Host Controller Driver Responsibilities........................................................... 12
3.4.1 Host Controller Management ....................................................................................12
3.4.2 Bandwidth Allocation................................................................................................12
3.4.3 List Management ......................................................................................................13
3.4.4 Root Hub..................................................................................................................13
3.5 Host Controller Responsibilities...................................................................... 13
3.5.1 USB States ...............................................................................................................13
3.5.2 Frame management ...................................................................................................14
3.5.3 List Processing..........................................................................................................14
4. DATA STRUCTURES............................................................................................... 15
4.1 Overview............................................................................................................. 15
4.2 Endpoint Descriptor .......................................................................................... 16
4.2.1 Endpoint Descriptor Format......................................................................................16
4.2.2 Endpoint Descriptor Field Definitions........................................................................17
4.2.3 Endpoint Descriptor Description ...............................................................................18
4.3 Transfer Descriptors ......................................................................................... 19
4.3.1 General Transfer Descriptor ......................................................................................19
4.3.1.1 General Transfer Descriptor Format ...................................................................20
4.3.1.2 General Transfer Descriptor Field Definitions .....................................................20
4.3.1.3 General Transfer Descriptor Description.............................................................21
4.3.1.3.1 Buffer Address Determination .....................................................................21
4.3.1.3.2 Packet Size..................................................................................................21
4.3.1.3.3 Condition Codes..........................................................................................22
4.3.1.3.4 Sequence Bits..............................................................................................22
4.3.1.3.5 Transfer Completion....................................................................................23
4.3.1.3.6 Transfer Errors............................................................................................23
4.3.1.3.6.1 Transmission Errors..............................................................................24
4.3.1.3.6.2 Sequence Errors ...................................................................................24

rdss

给钱了，下不了，郁闷．．．．