`
`EXHIBIT A
`
`
`
`Samsung Ex. 1413A p. 1
`
`
`
`Universal Serial Bus
`
`Specification
`
`Compaq
`
`Intel
`
`Microsoft
`
`NEC
`
`Revision 1.1
`
`September 23, 1998
`
`Samsung Ex. 1413A p. 2
`
`Samsung Ex. 1413A p. 2
`
`
`
`Universal Serial Bus Specification Revision 1.1
`
`Scope of this Revision
`The 1.1 revision of the specification is intended for product design. Every attempt has been made to ensure a
`consistent and implementable specification. Implementations should ensure compliance with this revision.
`
`Revision History
`
`Issue Date
`
`Comments
`
`November 11, 1994
`
`Supersedes 0.6e.
`
`December 30, 1994
`
`Revisions to Chapters 3-8, 10, and 11. Added
`appendixes.
`
`April 13, 1995
`
`Revisions to all the chapters.
`
`
`
`
`0.7
`
`
`
`
`
`
`1.0 FDR
`
`1 0
`
`
`
`August 25, 1995
`
`Revisions to all the chapters.
`
`November 13, 1995
`
`Revisions to Chapters 1, 2, 5-11.
`
`January 15, 1996
`
`
`
`
`Edits to Chapters 5, 6, 7, 8, 9, 10, and 11 for
`
`
`consistency.
`'_x'
`..a.
`
`
` September 23, 1998
`Updates to all chapters to fix problems identified.
`
`Universal Serial Bus Specification
`Copyright © 1998, Compaq Computer Corporation,
`Intel Corporation, Microsoft Corporation, NEC Corporation.
`All rights reserved.
`
`INTELLECTUAL PROPERTY DISCLAIMER
`THIS SPECIFICATION IS PROVIDED “AS IS” WITH NO WARRANTIES WHATSOEVER INCLUDING
`ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY
`WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE.
`A LICENSE IS HEREBY GRANTED TO REPRODUCE AND DISTRIBUTE THIS SPECIFICATION FOR
`INTERNAL USE ONLY. NO OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR
`OTHERWISE, TO ANY OTHER INTELLECTUAL PROPERTY RIGHTS IS GRANTED OR INTENDED
`HEREBY.
`AUTHORS OF THIS SPECIFICATION DISCLAIM ALL LIABILITY, INCLUDING LIABILITY FOR
`INFRINGEMENT OF PROPRIETARY RIGHTS, RELATING TO IMPLEMENTATION OF
`INFORMATION IN THIS SPECIFICATION. AUTHORS OF THIS SPECIFICATION ALSO DO NOT
`WARRANT OR REPRESENT THAT SUCH IMPLEMENTATION(S) WILL NOT INFRINGE SUCH
`RIGHTS.
`
`GeoPort and Apple Desktop Bus are trademarks of Apple Computer, Inc.
`Windows and Windows NT are trademarks and Microsoft and Win32 are registered trademarks of Microsoft Corporation.
`IBM, PS/2, and Micro Channel are registered trademarks of International Business Machines Corporation.
`AT&T is a registered trademark of American Telephone and Telegraph Company.
`Compaq is a registered trademark of Compaq Computer Corporation.
`UNIX is a registered trademark of UNIX System Laboratories.
`IZC is a trademark of Phillips Semiconductors.
`DEC is a trademark of Digital Equipment Corporation.
`All other product names are trademarks, registered trademarks, or servicemarks of their respective owners.
`
`Please send comments via electronic mail to techsup@usb. org
`For industry information, refer to the USB Implementers Forum web page at http://www. usb. org
`
`Samsung Ex. 1413A p. 3
`
`Samsung Ex. 1413A p. 3
`
`
`
`Universal Serial Bus Specification Revision 1.1
`
`Contents
`
`CHAPTER 1
`
`INTRODUCTION
`
`1.1 Motivation ............................................................................................................................................. ..1
`
`1.2 Objective of the Specification .............................................................................................................. ..1
`
`1.3
`
`Scope of the Document ......................................................................................................................... ..2
`
`1.4 Document Organization ....................................................................................................................... ..2
`
`CHAPTER 2 TERMS AND
`
`CHAPTER 3
`
`3
`
`11
`
`3.1
`
`Goals for the Universal Serial Bus .................................................................................................... ..11
`
`3.2
`
`Taxonomy of Application Space ..........................................................................................................12
`
`3.3
`
`Feature List ......................................................................................................................................... ..12
`
`CHAPTER 4 ARCHITECTURAL OVERVIEW ...................................................... .. 15
`
`..................................................................................................................15
`USB System Description
`4.1
`4.1.1
`Bus Topology ................................................................................................................................ ..16
`
`Physical Interface .................................................................................................................................17
`4.2
`4.2.1
`Electrical ....................................................................................................................................... ..17
`4.2.2 Mechanical .................................................................................................................................... ..17
`
`Power ................................................................................................................................................... ..18
`4.3
`4.3.1
`Power Distribution ........................................................................................................................ ..18
`4.3.2
`Power Management ....................................................................................................................... ..18
`
`4.4
`
`Bus Protocol ........................................................................................................................................ ..18
`
`4.5 Robustness ........................................................................................................................................... ..19
`4.5.1
`Error Detection .............................................................................................................................. ..19
`4.5.2
`Error Handling ...........................................
`................................................................................. ..l9
`
`System Configuration ......................................................................................................................... ..19
`4.6
`4.6.1
`Attachment of USB Devices ......................................................................................................... ..19
`4.6.2
`Removal ofUSB Devices .............................................................................................................. ..20
`4.6.3
`Bus Enumeration ........................................................................................................................... ..20
`
`4.7 Data Flow Types ................................................................................................................................. ..20
`4.7.1
`Control Transfers ........................................................................................................................... ..20
`
`iii
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`Samsung Ex. 1413A p. 4
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`Samsung Ex. 1413A p. 4
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`
`
`Universal Serial Bus Specification Revision 1.1
`
`4.7.2
`
`4.7.3
`4.7.4
`
`4.7.5
`
`Bulk Transfers ............................................................................................................................... . .20
`
`Interrupt Transfers ......................................................................................................................... . . 21
`Isochronous Transfers ................................................................................................................... ..21
`
`Allocating USB Bandwidth ........................................................................................................... ..21
`
`USB Devices ..........................................................................................................................................21
`4.8
`4.8.1
`Device Characterizations ............................................................................................................... ..21
`
`4.8.2
`
`Device Descriptions ...................................................................................................................... ..22
`
`4.9
`
`USB Host: Hardware and Software ................................................................................................. ..24
`
`4.10 Architectural Extensions ................................................................................................................... ..24
`
`CHAPTER 5 USB DATA FLOW
`
`25
`
`5.1
`
`Implementer Viewpoints .................................................................................................................... ..25
`
`Bus Topology ...................................................................................................................................... ..27
`5.2
`
`USB Host .................................................................................................................................. ..27
`5.2.1
`5.2.2 USB Devices ................................................................................................................................. ..28
`
`5.2.3
`5.2.4
`5.2.5
`
`Physical Bus Topology.................................................................................................................. ..29
`Logical Bus Topology ................................................................................................................... ..30
`Client Software-to-function Relationship ...................................................................................... ..30
`
`USB Communication Flow ................................................................................................................ ..31
`5.3
`5.3.1
`Device Endpoints .......................................................................................................................... ..32
`5.3.2
`Pipes .............................................................................................................................................. ..33
`
`5.4
`
`Transfer Types .................................................................................................................................... ..35
`
`5.5 Control Transfers ............................................................................................................................... ..36
`5.5.1
`Control Transfer Data Format ....................................................................................................... ..36
`5.5.2
`Control Transfer Direction .............
`............................................................................................ ..37
`5.5.3
`Control Transfer Packet Size Constraints ...................................................................................... ..37
`5.5.4
`Control Transfer Bus Access Constraints ...................................................................................... ..38
`
`5.5.5
`
`Control Transfer Data Sequences .................................................................................................. . .40
`
`Isochronous Transfers ....................................................................................................................... ..41
`5.6
`5.6.1
`Isochronous Transfer Data Format ................................................................................................ ..41
`5.6.2
`Isochronous Transfer Direction .........................................................................
`......................... ..41
`5.6.3
`Isochronous Transfer Packet Size Constraints .............................................................................. ..41
`5.6.4
`Isochronous Transfer Bus Access Constraints .............................................................................. ..42
`
`5.6.5
`
`Isochronous Transfer Data Sequences ........................................................................................... ..43
`
`Interrupt Transfers ............................................................................................................................ ..43
`5.7
`5.7.1
`Interrupt Transfer Data Format ..................................................................................................... ..43
`5.7.2
`Interrupt Transfer Direction .......................................................................................................... ..43
`5.7.3
`Interrupt Transfer Packet Size Constraints .................................................................................... ..43
`5.7.4
`Interrupt Transfer Bus Access Constraints .................................................................................... ..44
`5.7.5
`Interrupt Transfer Data Sequences ................................................................................................ ..46
`
`5.8 Bulk Transfers ............................................................................................................................. ..46
`5.8.1
`Bulk Transfer Data Format ........................................................................................................... ..47
`5.8.2
`Bulk Transfer Direction .......................................................... . .. ................................................... ..47
`5.8.3
`Bulk Transfer Packet Size Constraints .......................................................................................... ..47
`
`iv
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`Samsung Ex. 1413A p. 5
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`Samsung Ex. 1413A p. 5
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`
`
`Universal Serial Bus Specification Revision 1.1
`
`5.8.4
`5.8.5
`
`Bulk Transfer Bus Access Constraints .......................................................................................... ..47
`Bulk Transfer Data Sequences ...................................................................................................... ..48
`
`Bus Access for Transfers .................................................................................................................... ..49
`5.9
`5.9.1
`Transfer Management .................................................................................................................... ..49
`5.9.2
`Transaction Tracking ..................................................................................................................... ..52
`5.9.3
`Calculating Bus Transaction Times ............................................................................................... ..54
`5.9.4
`Calculating Buffer Sizes in Functions and Sofiware ..................................................................... ..55
`5.9.5
`Bus Bandwidth Reclamation ......................................................................................................... ..55
`
`........................................ ..55
`5.10 Special Considerations for Isochronous Transfers ...............................
`5.10.1 Example Non-USB Isochronous Application ................................................................................ ..56
`5.10.2 USB Clock Model ......................................................................................................................... ..59
`
`5.10.3 Clock Synchronization .................................................................................................................. ..61
`5.10.4 Isochronous Devices ...................................................................................................................... ..61
`5.10.5 Data Prebuffering .......................................................................................................................... ..69
`5.10.6 SOF Tracking ................................................................................................................................ ..70
`5.10.7 Error Handling ............................................................................................................................... ..70
`5.10.8 Buffering for Rate Matching ......................................................................................................... ..71
`
`CHAPTER 6 MECHANICAL .................................................................................. .. 73
`
`6.1 Architectural Overview........................................................................................................................73
`
`6.2 Keyed Connector Protocol ................................................................................................................. ..73
`
`6.3
`
`Cable .................................................................................................................................................... ..74
`
`Cable Assembly................................................................................................................................... ..74
`6.4
`6.4.1
`Detachable Cable Assemblies .........................................................
`........................................... ..74
`6.4.2
`Full-speed Captive Cable Assemblies ........................................................................................... ..76
`6.4.3
`Low-speed Captive Cable Assemblies .......................................................................................... ..78
`6.4.4
`Prohibited Cable Assemblies ......................................................................................................... ..80
`
`6.5 Connector Mechanical Configuration and Material Requirements .............................................. ..80
`6.5.1
`USB Icon Location ........................................................................................................................ ..81
`6.5.2 USB Connector Termination Data ................................................................................................ ..82
`
`6.5.3
`6.5.4
`
`Series “A” and Series “B” Receptacles ......................................................................................... ..82
`Series “A” and Series “B” Plugs ................................................................................................... ..86
`
`Cable Mechanical Configuration and Material Requirements ...................................................... ..90
`6.6
`6.6.1
`Description .................................................................................................................................... ..90
`6.6.2
`Construction .. ................................................................................................................................ ..9l
`6.6.3
`Electrical Characteristics ............................................................................................................... ..93
`6.6.4
`Cable Environmental Characteristics ............................................................................................ ..93
`
`6.6.5
`
`Listing ........................................................................................................................................... ..94
`
`Electrical, Mechanical and Environmental Compliance Standards .............................................. ..94
`6.7
`6.7.1
`Applicable Documents ...........................
`.................................................................................. .. 102
`
`6.8
`
`USB Grounding ................................................................................................................................ ..102
`
`6.9
`
`PCB Reference Drawings...................................................................................................................102
`
`v
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`Samsung Ex. 1413A p. 6
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`Samsung Ex. 1413A p. 6
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`
`
`Universal Serial Bus Specification Revision 1.1
`
`CHAPTER 7 ELECTRICAL ................................................................................. .. 107
`
`Signaling ............................................................................................................................................ ..107
`7.1
`7.1.1
`USB Driver Characteristics ......................................................................................................... ..107
`7.1.2 Data Signal Rise and Fall ............................................................................................................ .110
`7.1.3
`Cable Skew.................................................................................................................................. ..1l2
`7.1.4
`Receiver Characteristics .............................................................................................................. ..112
`
`Device Speed Identification ........................................................................................................ . .1 13
`7. I .5
`Input Characteristics .................................................................................................................... .. l 14
`7. I .6
`Signaling Levels .......................................................................................................................... ..115
`7. I .7
`Data Encoding/Decoding ............................................................................................................ .. 123
`7. I .8
`Bit Stuffing .................................................................................................................................. ..124
`7.|.9
`7. I
`. 10 Sync Pattern ................................................................................................................................ ..126
`7.1.11 Data Signaling Rate ..................................................................................................................... .. 126
`7.1.12 Frame Interval and Frame Interval Adjustment .......................................................................... ..126
`7.1.13 Data Source Signaling ................................................................................................................. .. 127
`7.1.14 Hub Signaling Timings ............................................................................................................... .. 128
`7.1.15 Receiver Data Jitter ..................................................................................................................... ..130
`
`7.1.16 Cable Delay ................................................................................................................................. ..132
`7.1.17 Cable Attenuation ........................................................................................................................ ..133
`
`7.1.18 Bus Tum-around Time and Inter—packet Delay ........................................................................... .. 133
`7.1.19 Maximum End-to-end Signal Delay .........................................................................
`................ .. 133
`
`Power Distribution ........................................................................................................................... ..134
`7.2
`7.2.1
`Classes of Devices ....................................................................................................................... ..134
`
`Voltage Drop Budget .................................................................................................................. .. 138
`7.2.2
`Power Control During Suspend/Resume ..................................................................................... .. I39
`7.2.3
`7.2.4 Dynamic Attach and Detach........................................................................................................ .. 140
`
`Physical Layer .................................................................................................................................. ..141
`7.3
`7.3.1
`Regulatory Requirements ............................................................................................................ .. 142
`7.3.2
`Bus Timing/Electrical Characteristics ......................................................................................... ..142
`7.3.3
`Timing Waveforms .......................................................................
`........................................... .. 151
`
`CHAPTER 8 PROTOCOL LAYER ...................................................................... .. 155
`
`8.1
`
`Bit Ordering ...................................................................................................................................... ..155
`
`8.2
`
`SYNC Field ....................................................................................................................................... ..155
`
`Packet Field Formats ....................................................................................................................... ..155
`8.3
`8.3.1
`Packet Identifier Field ................................................................................................................. .. 15 5
`8.3.2
`Address Fields ............................................................................................................................. ..156
`8.3.3
`Frame Number Field ................................................................................................................... .. 157
`8.3.4 Data Field ............................................................................................
`..................................... .. 157
`
`8.3.5
`
`Cyclic Redundancy Checks ......................................
`
`................................................................ .. I 58
`
`Packet Formats ................................................................................................................................. ..158
`8.4
`8.4.1
`Token Packets ............................................................................................................................. .. 159
`8.4.2
`Start-of-Frame Packets ................................................................................................................ .. 159
`8.4.3
`Data Packets ................................................................................................................................ .. 160
`8.4.4
`Handshake Packets ...................................................................................................................... ..160
`
`8.4.5
`
`Handshake Responses .................................................
`
`............................................................. .. 161
`
`vi
`
`Samsung Ex. 1413A p. 7
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`Samsung Ex. 1413A p. 7
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`
`
`Universal Serial Bus Specification Revision 1.1
`
`Transaction Formats ........................................................................................................................ ..162
`8.5
`8.5.1
`Bulk Transactions ........................................................................................................................ ..163
`8.5.2
`Control Transfers .............................................................................................
`......................... ..164
`8.5.3
`Interrupt Transactions .................................................................................................................. .. 167
`8.5.4
`Isochronous Transactions ............................................................................................................ ..168
`
`...........l68
`8.6 Data Toggle Synchronization and Retry ............................................................................
`8.6.1
`Initialization via SETUP Token .................................................................................................. .. 169
`8.6.2
`Successful Data Transactions ...................................................................................................... ..169
`8.6.3
`Data Corrupted or Not Accepted ................................................................................................. ..170
`8.6.4
`Corrupted ACK Handshake ......................................................................................................... ..170
`8.6.5
`Low-speed Transactions .............................................................................................................. ..171
`
`8.7 Error Detection and Recovery...........................................................................................................172
`8.7.1
`Packet Error Categories ..........................................................
`............................................ .. 172
`8.7.2
`Bus Tum-around Timing ............................................................................................................. ..172
`8.7.3
`False EOPs .................................................................................................................................. ..173
`
`8.7.4
`
`Babble and Loss of Activity Recovery ........................................................................................ ..174
`
`CHAPTER 9 USB DEVICE FRAMEWORK ......................................................... .. 175
`
`....................................... ..175
`.....................................................
`USB Device States ...........................
`9.1
`9.1.1
`Visible Device States ................................................................................................................... ..175
`9.1.2
`Bus Enumeration ......................................................................................................................... ..179
`
`.......... ..180
`9.2 Generic USB Device Operations ........................................................................................
`9.2.]
`Dynamic Attachment and Removal ............................................................................................. ..180
`9.2.2
`Address Assignment .................................................................................................................... ..180
`9.2.3
`Configiration .............................................................................................................................. ..180
`9.2.4 Data Transfer ............................................................................................................................... ..181
`
`9.2.5
`9.2.6
`9.2.7
`
`Power Management ..................................................................................................................... ..181
`Request Processing ...................................................................................................................... ..181
`Request Error............................................................................................................................... ..182
`
`....................... ..183
`USB Device Requests ..............................................................................................
`9.3
`9.3.1
`bmRequestType ...........................................................
`.......................................................... ..183
`9.3.2
`bRequest ...................................................................................................................................... ..184
`9.3.3
`wValue ........................................................................................................................................ ..184
`9.3.4 wlndex ......................................................................................................................................... ..184
`
`9.3.5
`
`wLength ....................................................................................................................................... ..l84
`
`.....................185
`Standard Device Requests ..........................................................................................
`9.4
`9.4.1
`Clear Feature ............................................................................................................................... ..188
`
`Get Configuration ........................................................................................................................ ..189
`9.4.2
`Get Descriptor
`......................................................................................................................... .. 189
`9.4.3
`Get Interface ................................................................................................................................ .. 190
`9.4.4
`Get Status .................................................................................................................................... .. 190
`9.4.5
`Set Address .................................................................................................................................. ..192
`9.4.6
`Set Configuration ........................................................................................................................ ..l93
`9.4.7
`Set Descriptor .............................................................................................................................. .. 193
`9.4.8
`Set Feature ................................................................................................................................... ..194
`9.4.9
`9.4.10 Set Interface .......................................................................................