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mindshare.com © 2009
Comprehensive USB 3.0
Technology

.com © 2009
2
USB 3.0 Technology Outline
¾ Platform Power Management Issues
¾ Link Power Management
¾ Suspend & Resume
¾ USB 3.0 Hubs
¾ USB 3.0 Hub Configuration
¾ SS Link Training & LTSSM
¾ Other LTSSM States
¾ SS Reset Events
¾ LTSSM Overview
¾ Link Training Sequence
¾ End-to-End Protocols
(Protocol Layer)
¾ USB 3.0 Overview
¾ Motivation for USB 3.0
¾ USB 2.0 Review
¾ Introduction to USB 3.0
¾ Link Error handling
¾ Hub Downstream Port Attach/Detach
¾ Low Frequency Periodic Signaling
¾ Link Traffic
¾ Control Transfer Protocols
¾ IN and OUT Transaction Protocols
¾ Bulk Transfer Protocols
¾ Interrupt Transfer Protocols
¾ Isochronous Transfer Protocols
¾ Transfer Types:
Characteristics & Examples
¾ USB 3.0 Reset, Initialization & Config.
¾ Other Link-Power State Transitions
¾ USB 3.0 Enumeration & Configuration
¾ Hub Upstream Port Attachment
¾ Hub Function Operation
¾ Deferred Transactions
¾ Link Header Packet Flow Control
¾ USB 3.0 Power Management
¾ SS Physical Layer Electrical
¾ Port-to-Port Protocols
(Link-Level Protocol)
¾ Link & Physical Layer Hardware
¾ Protocol Packets
¾ Link Commands
¾ Ordered Sets

mindshare.com © 2009
Motivation for USB 3.0

.com © 2009
4
Key Areas Of Improvement
¾ USB 2.0 handles most current applications well
¾ USB 3.0 enables more demanding applications
¾ USB system and device management
¾ Power conservation
¾ Data flow control
¾ Error handling

.com © 2009
5
USB Bandwidth Compared
Version Bit Rate Max Bytes/sec* Introduced
USB 1.0 1.5Mb/s & 12Mb/s
(Low & Full Speed)
1.5MB/sec Jan, 1995
USB 2.0 480Mb/s
(High Speed)
60MB/sec April, 2000
USB 3.0 5Gb/s
(SuperSpeed)
500MB/sec Dec, 2008
*Max Bytes/sec field indicates peak rate, including packet protocol overhead.
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